Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ed9d98e413bb54…

MALICIOUS

PDF

85.2 KB Created: 2021-10-06 13:37:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 87619c2b296c8cd830c807720380691f SHA-1: 6c5bb1094e817d800605afa7905de9eb15da118c SHA-256: 76ed9d98e413bb54e5190dfd14b089c9a1637731b228f4d5837370ebb3ba8d6a
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://drafthe.ru/uplcv?utm_term=pumpkin+cheesecake+with+sour+cream+topping PDF link annotation
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149cdb45d340---goridemiwamavutibasamu.pdfIn PDF document text
    • https://mma-montessori.com/admin/ckfinder/userfiles/files/96402916561.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/220746594441.pdfIn PDF document text
    • http://hpcad.pl/Upload/file/19228987693.pdfIn PDF document text
    • https://www.fangjin.org/ckfinder/userfiles/files/76996412318.pdfIn PDF document text
    • https://peltonfell.org.uk/ckfinder/userfiles/files/jeviporeleb.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161495722d0b5c---64917450511.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/161593969e86e2---6484194979.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/161542a0976b6a---nixurufibosetevejekutom.pdfPDF link annotation
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/161467c5a173ce---banunajixulimewipipigux.pdfIn PDF document text
    • http://pytextiles.com/userfiles/file/12284414594.pdfIn PDF document text
    • https://aceold.lrsinc.co/userfiles/file/dulasaw.pdfIn PDF document text
    • https://perfecthospital.org/ckfinder/userfiles/files/38465747072.pdfIn PDF document text
    • https://self-storage.sg/images/uploadedimages/file/dorevogibujepiko.pdfIn PDF document text
    • https://novamakine.com/upload/ckfinder/files/25394513964.pdfIn PDF document text
    • http://wedding-box100.com/uploads/files/202109100223357987.pdfIn PDF document text
    • https://legyenegyjonapod.hu/userfiles/files/zagakopogip.pdfIn PDF document text
    • https://abyway.lv/images/ck_images/files/33712475390.pdfIn PDF document text
    • https://www.le-domaine-de-hauterive.fr/ckfinder/userfiles/files/rudupigatu.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/9a757f52364c159e6c9e31a55f2ce73c/tinikexakukowitewufexowip.pdfIn PDF document text
    • http://pallenberg-busreisen.de/uploads/files/zorizuxiv.pdfIn PDF document text
    • https://oz.korytnica.eu/data/files/61088928873.pdfIn PDF document text
    • https://citytrafik.nu/images/file/39124434968.pdfIn PDF document text
    • http://oskarmak.com/userfiles/file/wiwikebedupebos.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_off0000e480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE480 11052 bytes
SHA-256: 0e2fb97ba48459433ba064277ecf3eeac623fefed19b2f28008b5c627780b350
font_01_sfnt_off0000fe2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001163d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1163D 19056 bytes
SHA-256: c8315dd75ab84d941e6e49b1d527d08ed06935d02e323deced505918c9460d4e

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