Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2002052a8286e2…

MALICIOUS

PDF

38.2 KB Created: 2020-05-18 07:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 951ded43c2268d6d31ee50e6ef719048 SHA-1: 1589c0b5fb36460c3da6b78544de29159c94995d SHA-256: 9d2002052a8286e23675f0b908b66fb0815c57c77072732486c56ae75bcbd59f
104 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to other PDF files, which is indicative of a link farm or SEO manipulation tactic. The presence of a 'download button' lure further suggests an attempt to trick users into navigating these links. The document body itself is largely unreadable, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bshppopup.com/uploads/1/3/1/0/131070146/131070146.html#electronics+multiple+choice+questions+with+answers PDF link annotation
    • http://prontogarageparts.com/uploads/1/3/0/8/130813606/vulerifejokof_voxenogel_soxas_garakof.pdfIn PDF document text
    • http://johnkay.org/uploads/1/3/0/8/130814360/1385813.pdfIn PDF document text
    • http://rjgfreelancer.com/uploads/1/3/1/4/131407453/boxawelazimur.pdfIn PDF document text
    • http://colorofjoy.org/uploads/1/3/1/0/131070656/c6ed298a87b.pdfIn PDF document text
    • http://havebagswilltravelbykelly.com/uploads/1/3/0/5/130540477/gomuxetinif.pdfIn PDF document text
    • http://manitreefruitfarm.com/uploads/1/3/1/4/131438086/1040488.pdfIn PDF document text
    • http://joanmoffitt.com/uploads/1/3/0/5/130539934/rilokevudenedilebun.pdfIn PDF document text
    • http://imbeaucapital.ca/uploads/1/3/0/6/130603896/1324197.pdfIn PDF document text
    • http://annikahintzenewzealand.com/uploads/1/3/0/6/130622011/pezujimifuz.pdfIn PDF document text
    • http://pepperhills.net/uploads/1/3/0/5/130590029/3623313.pdfIn PDF document text
    • http://nicholeamberphotography.com/uploads/1/3/0/5/130551218/373921.pdfIn PDF document text
    • http://pavis.cz/uploads/1/3/0/2/130288864/tutomirezun-jexoli-migalefi-bowofivivopojox.pdfIn PDF document text
    • http://varietyvoice.com/uploads/1/3/0/6/130605269/tibafi.pdfIn PDF document text
    • http://powerpartners.info/uploads/1/3/0/3/130313345/gojunebomuw.pdfIn PDF document text
    • http://triquetraphoenix.com/uploads/1/3/0/3/130313491/dc4b7baf.pdfIn PDF document text
    • http://patricksolomon.org/uploads/1/3/0/8/130874394/9626606.pdfIn PDF document text
    • http://galerieo.fr/uploads/1/3/0/7/130738712/16699613b75cc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 3

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_off0000670f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670F 11092 bytes
SHA-256: 85a770fb908ca7ffbb19148e001cb58a0a1a5da708d94c6c203a4b27f3579da8

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