Malicious PDF — malware analysis report

Static analysis result for SHA-256 0133c74f10b9c04c…

MALICIOUS

PDF

40.9 KB Created: 2020-03-28 05:01:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 34726be51d0160278f3fc410d02b0b06 SHA-1: 31cd5667bd86904231e2440a57eab4c4c5c533ae SHA-256: 0133c74f10b9c04c9c57cdf26deb48e111bed662ce3c889f3edd1c7b7f9aac80
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO manipulation tactic. The primary URL points to content about replacing a washing machine drain pump, a common lure for phishing or malware delivery. The ML classifier strongly indicated maliciousness, supporting the assessment of a malicious PDF.

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://escaperoomprops.us/uploads/1/3/1/4/131406804/131406804.html#how+to+replace+drain+pump+lg+washer
    • http://www.barambah-beekeepers.org/uploads/1/3/0/2/130289736/nisiromugomob_pafar.pdf
    • http://stealthextracts.com/uploads/1/3/0/6/130620921/zirug.pdf
    • http://www.jaimielindsay.com/uploads/1/3/0/8/130814209/nikivaf.pdf
    • http://helloinfinta.com/uploads/1/3/0/6/130639386/kozojumipoju.pdf
    • http://www.dia-rhematos-christou-art-and-craftsmanship.com/uploads/1/3/0/9/130969301/bejebo.pdf
    • http://eygcosmetics.com/uploads/1/3/0/6/130604511/8932050.pdf
    • http://grammfg.com/uploads/1/3/0/6/130605501/rerurududenot_falotibejop_netosep_mutarovuzetisod.pdf
    • http://mountainmotoadventures.com/uploads/1/3/0/6/130604286/numetemerisipoxixen.pdf
    • http://angelidelsorriso.com/uploads/1/3/0/2/130289406/jumuvobebil.pdf
    • http://www.codaergosum.com/uploads/1/3/0/8/130874520/445f347e64.pdf
    • http://hairextensionsspokanenorth.com/uploads/1/3/1/0/131070702/jolena.pdf
    • http://interfaithdialogue.us/uploads/1/3/0/5/130546645/semofu_vakomugirokim_runej_belepakofidi.pdf
    • http://www.impactcds.com/uploads/1/3/0/3/130379087/gonewu.pdf
    • http://conneracup.com/uploads/1/3/0/4/130489052/sitonozuzoj-gasolaral-kadebin-lisunamewix.pdf
    • http://host158.carmichaelnl.com/uploads/1/3/0/7/130738881/8303833.pdf
    • http://fagerh�yvel.no/uploads/1/3/0/7/130775115/23e6c60b.pdf
    • http://gospelgraceslc.com/uploads/1/3/0/4/130483959/840446414ce3ee2.pdf
    • http://dfswire.com/uploads/1/3/0/3/130313603/solebadegusuva.pdf
    • http://fordcando.com/uploads/1/3/0/4/130478004/03f13d789e69a.pdf
    • http://preparedmealstogo.com/uploads/1/3/0/7/130775732/tudozuv-kiluregexexiku-joliv.pdf
    • http://unityspiritualcenterofcharlotte.org/uploads/1/3/0/7/130775474/5812946.pdf
    • http://www.pharaon-agency.com/uploads/1/3/0/5/130539810/zunapajodurul-xowad.pdf
    • http://domoliseo.com/uploads/1/3/0/4/130477890/8137488.pdf
    • http://tn2m.ca/uploads/1/3/0/3/130313166/ddcbb7e5d85.pdf
    • http://tanglewood.christmas/uploads/1/3/0/4/130488743/9410857.pdf
    • http://xn--fagerhyvel-5cb.no/uploads/1/3/0/7/130775115/23e6c60b.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_off00007919.bin
8e9543c4b0d0c412ecddc36061675bdd03402f6e495d14324596dd47143fa357		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7919 7196 bytes

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