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)
MD5: c081e2752c9c4b1f36989763b54db107 SHA-1: 3eb0b1ff2e6b3e4ab7be33682ccbae08fe199647 SHA-256: 2d6f779c7fac42782a8cf4840badf087a705fb7f4686d7025be502f9170e280e
152 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 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.
  • ClamAV: Pdf.Dropper.Agent-9253883-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9253883-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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
    • http://theaberningmd.net/uploads/1/3/0/7/130775821/megematavo-wasom-folubirotaxi.pdf
    • http://bud-spencer.org/uploads/1/3/0/5/130540592/7964961.pdf
    • http://shambhalaindonesia.com/uploads/1/3/0/5/130538818/239ef.pdf
    • http://nhappyandbeautiful.store/uploads/1/3/1/3/131381982/5808404.pdf
    • http://kaiserairlines.net/uploads/1/3/1/3/131379524/digisezoga_sidikifipodu_zetujutizobid.pdf
    • http://smokin.tires/uploads/1/3/0/8/130813738/1729809.pdf
    • http://tylerluginski.com/uploads/1/3/0/7/130740625/bupanegu.pdf
    • http://panphillipsfishingresort.com/uploads/1/3/0/8/130874316/3143550.pdf
    • http://kleenlabel.com/uploads/1/3/0/7/130775730/1448708.pdf
    • http://mvleoclub.com/uploads/1/3/0/8/130814457/421e9f5c7787.pdf
    • http://abbepsychservices.com/uploads/1/3/0/7/130775758/3262131.pdf
    • http://coffeecakecomfort.com/uploads/1/3/0/5/130550712/1389430.pdf
    • http://talentcatch.net/uploads/1/3/1/3/131379225/d472ee7bd80bc.pdf
    • http://microtiasurgery.net/uploads/1/3/0/8/130873903/1643295.pdf
    • http://dentalsmilesunlimited.net/uploads/1/3/0/6/130604233/8514735.pdf
    • http://hitfan.net/uploads/1/3/0/6/130604086/b54fab9.pdf
    • http://mvhc-llc.com/uploads/1/3/0/6/130603919/dojobemotozugob.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

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

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