Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cb211d7c8e5781f…

MALICIOUS

PDF

45.9 KB Created: 2020-06-07 15:40:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f7dbe49647bba10caeb07313ec079797 SHA-1: 80dcc58229fce9b3733bc813ee0d0b33a58bcd33 SHA-256: 2cb211d7c8e5781f8b1f36a876307adf64babebd1a2382f571e4f5ed1ebcb637
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains structured for SEO manipulation. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm. The embedded URLs suggest a redirection or content distribution scheme, likely to deliver further malicious payloads or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://drobgyn.net/uploads/1/3/0/5/130546244/130546244.html#Japon+ensest+oyun+g%25C3%25B6sterisi+video PDF link annotation
    • http://webmail.normalskinathens.com/uploads/1/3/1/3/131379598/kilogevufolodo.pdfIn PDF document text
    • http://bridgepointportnewark.com/uploads/1/3/0/4/130476896/2366266.pdfIn PDF document text
    • http://mail.iconsofink.com/uploads/1/3/0/5/130551756/xowakema.pdfIn PDF document text
    • http://yonelu.com/uploads/1/3/0/7/130739068/2606606.pdfIn PDF document text
    • http://notoriousnails.org/uploads/1/3/0/3/130313433/dudixerekuropin.pdfIn PDF document text
    • http://deermommy.com/uploads/1/3/0/6/130621109/6847361969cf1.pdfIn PDF document text
    • http://limestoneridgefarm.ca/uploads/1/3/1/3/131380480/9036274.pdfIn PDF document text
    • http://kuwaitmomsguide.net/uploads/1/3/0/2/130291673/1978176.pdfIn PDF document text
    • http://comprasusashop.com/uploads/1/3/0/6/130620375/lanenanosefe.pdfIn PDF document text
    • http://crystalsentwined.com/uploads/1/3/0/5/130544790/domafifudek_xogopusabizana_kaxepara.pdfIn PDF document text
    • http://220.undesirable.us/uploads/1/3/0/6/130622066/261216.pdfIn PDF document text
    • http://littlefishyswimschool.com/uploads/1/3/1/0/131070030/budedowugujote.pdfIn PDF document text
    • http://thetimesharepayoff.com/uploads/1/3/0/5/130541904/2b26b387d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://duxojipupab.files.wordpress.com/2020/06/52890339542.pdfIn PDF document text
    • https://zarigalivo.files.wordpress.com/2020/06/magidoratadolap.pdfIn PDF document text
    • https://raropare897422586.files.wordpress.com/2020/06/vuxola.pdfIn PDF document text
    • https://pixojixose.files.wordpress.com/2020/06/44292910859.pdfIn PDF document text
    • https://jilugiku.files.wordpress.com/2020/06/24240610485.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AE 3272 bytes
SHA-256: 66aa7057df6b15b03d79c6f701b6b82ab448eb9fa320b8de5c25311c57398993
font_01_sfnt_off00007059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7059 10488 bytes
SHA-256: e711ef6619aa914395890607ebe844943fd77e00b6334a3cbd42f888e14e00cb
font_02_sfnt_off00009442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9442 16076 bytes
SHA-256: 28b54622314fe970c10f0b8fb2e7509d8ab364d8e49f98911ef247a77c086d7b

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