Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6f779c7fac4278…

MALICIOUS

PDF

39.7 KB Created: 2020-03-30 22:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: c081e2752c9c4b1f36989763b54db107 SHA-1: 3eb0b1ff2e6b3e4ab7be33682ccbae08fe199647 SHA-256: 2d6f779c7fac42782a8cf4840badf087a705fb7f4686d7025be502f9170e280e
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Dropper.Agent-9253883-0 and a machine learning classifier. The document contains a large number of external links, indicating a link farm or SEO manipulation tactic. The primary purpose appears to be directing users to a multitude of other PDF files hosted on various domains, likely to distribute further malicious content or engage in SEO spam.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-9253883-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9253883-0
  • 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://hollyboggs.com/uploads/1/3/0/4/130488486/130488486.html#explanation+of+black+mirror+san+junipero PDF link annotation
    • http://theaberningmd.net/uploads/1/3/0/7/130775821/megematavo-wasom-folubirotaxi.pdfIn PDF document text
    • http://bud-spencer.org/uploads/1/3/0/5/130540592/7964961.pdfIn PDF document text
    • http://shambhalaindonesia.com/uploads/1/3/0/5/130538818/239ef.pdfIn PDF document text
    • http://nhappyandbeautiful.store/uploads/1/3/1/3/131381982/5808404.pdfIn PDF document text
    • http://kaiserairlines.net/uploads/1/3/1/3/131379524/digisezoga_sidikifipodu_zetujutizobid.pdfIn PDF document text
    • http://smokin.tires/uploads/1/3/0/8/130813738/1729809.pdfIn PDF document text
    • http://tylerluginski.com/uploads/1/3/0/7/130740625/bupanegu.pdfIn PDF document text
    • http://panphillipsfishingresort.com/uploads/1/3/0/8/130874316/3143550.pdfIn PDF document text
    • http://kleenlabel.com/uploads/1/3/0/7/130775730/1448708.pdfIn PDF document text
    • http://mvleoclub.com/uploads/1/3/0/8/130814457/421e9f5c7787.pdfIn PDF document text
    • http://abbepsychservices.com/uploads/1/3/0/7/130775758/3262131.pdfIn PDF document text
    • http://coffeecakecomfort.com/uploads/1/3/0/5/130550712/1389430.pdfIn PDF document text
    • http://talentcatch.net/uploads/1/3/1/3/131379225/d472ee7bd80bc.pdfIn PDF document text
    • http://microtiasurgery.net/uploads/1/3/0/8/130873903/1643295.pdfIn PDF document text
    • http://dentalsmilesunlimited.net/uploads/1/3/0/6/130604233/8514735.pdfIn PDF document text
    • http://hitfan.net/uploads/1/3/0/6/130604086/b54fab9.pdfIn PDF document text
    • http://mvhc-llc.com/uploads/1/3/0/6/130603919/dojobemotozugob.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

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7157 7904 bytes
SHA-256: e86461811970af793fded5ed7ed7a5a0e47c0fbf2051635be5978f342b077f76

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