Malicious PDF — malware analysis report

Static analysis result for SHA-256 085a6332c65dfa48…

MALICIOUS

PDF

84.5 KB Created: 2021-07-03 09:03:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 88892d054930f1167cdf4a73befddf64 SHA-1: ddec928209696404dfff09628d535d78d55a500a SHA-256: 085a6332c65dfa486012a5d0926af9a31bda0c4d89dc10533055c33d69cdce2e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, containing numerous URLs pointing to potentially compromised websites. These links are likely intended to lure users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a554b9b6a---rivonaxoxom.pdf In PDF document text
    • http://www.lugashotel.com/data/editorfile/vuleduvo.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/53268481717.pdfIn PDF document text
    • http://zpb-maciejewski.pl/upload/fck/file/bovejejuxuwumubufe.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075f4cfd9e6d---deguwabetarosudak.pdfIn PDF document text
    • https://aterhesseg.com/up_image/file/27739806508.pdfIn PDF document text
    • https://heatingboiler.ca/fck_upload/file/sonegukabedisugoluziroked.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb54b3741c---jofazubene.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/jojapolamigibunozud.pdfIn PDF document text
    • https://flyags.com/editorResources/file///rekikobelug.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608b77c32160f---60855777170.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608224b67bd1f---xamasufalevum.pdfIn PDF document text
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/18dd8fd7c7b93c5edbfe656f4c61091e/24810211783.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b6c71ac498c---31778668408.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/49743102019.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7b070f41f2471c62c49afbe0ca8b68d4/nudonagisifusimabite.pdfIn PDF document text
    • http://barcabianca.eu/upload/file/wumereliju.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16082f65204990---jorifavuderawezug.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/fvu5etm2havbrmsjopsuonfjsc/fokosefifuwu.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/34020914568.pdfIn PDF document text
    • https://contactfm.be/userfiles/files/82700163695.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=class+9+chapter+6+tissue+question+answerPDF link annotation
    • 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_off0000e79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79D 16600 bytes
SHA-256: c27e193253a50367ccdc3f886636b9bfd6962f41ee1cb958fcb1e20ad6b567e5
font_01_sfnt_off000112c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ADC 11172 bytes
SHA-256: 45d553718bc03decac8005f4accfdd00ade3ebc51b09612e8ff781f0ca9309e0

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