Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a06d4a68ec44e76…

MALICIOUS

PDF

92.6 KB Created: 2021-07-01 20:52:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: f5546b8a36d8f3787bb4cba64d94d7a4 SHA-1: 6e382f04e4674c74c5990c129c64bfe030ba9013 SHA-256: 7a06d4a68ec44e76a7d6a8c9c1fb4e725ee34e83fdbfdceae8c7dda5a5dedb0a
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this PDF is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://allytemp.ru/uplcv?utm_term=download+dangal+song+mp3 PDF link annotation
    • http://ketnoikienthuc.com/upload/files/gapiwoxatapeseripud.pdfIn PDF document text
    • http://fatamorgana.fr/uploads/assets/file/witovokinub.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/02e66f458853a2fdc5a482f20df772cd/mefivisevefejuxodifotofox.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6d783a9340---vapezonolelabupelijusema.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/todokafamibuwepu.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096fae861f56---36602738277.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609d230962265---semodofuwit.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160773dd72014b---dakopew.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/2tu96elq511i05r1hmu9semb3e/4417225010.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/ded21409944e5a18bfdf788b8305436c/25697444952.pdfIn PDF document text
    • https://tramtron.vn/uploads/files/files/13908219903.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/8ff48ae913f758bd10a9d6c3a0922cf0/zusozanirenalajulowe.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c968acdcc3---remuwajobunetebu.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1193aae55---31182022956.pdfIn PDF document text
    • http://kengosushionlineorder.com/uploads/files/36475056509.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/70758004583.pdfPDF link annotation
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b50eb97188c---mabojiwetefupilakeju.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/24781089693.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/p64gm9kh71361ap8qctggdbtic/2741609583.pdfIn PDF document text
    • http://mu-rrrc.com/userfiles/file/94011045975.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079a5cc1461e---wajerufanum.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/zaxenuzolibixi.pdfIn PDF document text
    • https://foodvellythailand.com/upload/files/polegixazasukodisoki.pdfIn PDF document text
    • http://www.gonouvellezelande.com/files/28105511149.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f81495cfe3---96882535571.pdfIn PDF document text
    • https://zanhotel.ro/beficientconsultingFiles/file/wabesojesinipetukazinapa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001076e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076E 17300 bytes
SHA-256: c00c43ac15e1053637a72d3bf0b072d158046e01b870fb92c8b92a7574b71325
font_01_sfnt_off0001350c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1350C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D23 10572 bytes
SHA-256: 02635584642b4b5dd3955610fccd66b18ced10b9c7982193069863cbdcb2f937

Open this report in the interactive analyzer, or submit your own file for analysis.