Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6fb86fbe6a0b849…

MALICIOUS

PDF

37.6 KB Created: 2020-05-15 05:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 9205b50333c0a1f572a2eba06ee06fd6 SHA-1: aeae271ccec5026488e4967e94f43bd5d9237613 SHA-256: c6fb86fbe6a0b849c99fe20158648c874158225ed768b26a76d7cd33623e594c
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents across various domains. This technique is commonly used for SEO poisoning or to distribute further malicious content. No scripts were extracted, and the document body is largely unreadable, but the extensive link farm strongly suggests a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://drjakejackson.com/uploads/1/3/1/4/131452961/131452961.html#aws+console++from+s3 PDF link annotation
    • http://majesticallips.com/uploads/1/3/0/6/130639209/6213212.pdfIn PDF document text
    • http://auntjjpetsitting.com/uploads/1/3/0/5/130588203/gupojasasagej.pdfIn PDF document text
    • http://robbenoptics.com/uploads/1/3/0/5/130588588/8200055.pdfIn PDF document text
    • http://boclifton.com/uploads/1/3/0/7/130739363/8783851.pdfIn PDF document text
    • http://amgequestrian.com/uploads/1/3/0/6/130621654/550587.pdfIn PDF document text
    • http://tridentinfosec.info/uploads/1/3/0/8/130874394/soxowomuv.pdfIn PDF document text
    • http://milxytv.com/uploads/1/3/0/5/130551468/duvalejopi.pdfIn PDF document text
    • http://madelinejames.com/uploads/1/3/1/6/131636665/gototeki-gixekuvapajogur-zosoluzad-kurawejufe.pdfIn PDF document text
    • http://sfagingresearch.com/uploads/1/3/0/5/130539516/raduzoxat_mivunure_lokizuzif_rapofiliromix.pdfIn PDF document text
    • http://bodyhealthwizard.club/uploads/1/3/0/6/130605122/rodavenenen-tulaguwol-rojidedusaxuful-nawameveraw.pdfIn PDF document text
    • http://fudoglandscaping.com/uploads/1/3/0/2/130273791/zonuzojixikon.pdfIn PDF document text
    • http://thewealthscholar.com/uploads/1/3/1/4/131437102/6b37597.pdfIn PDF document text
    • http://healthtruths8.com/uploads/1/3/0/8/130874148/zukijaravenavot.pdfIn PDF document text
    • http://thephotontrap.com/uploads/1/3/0/6/130604708/eb4941.pdfIn PDF document text
    • http://thetaxclinicofbaltimore.com/uploads/1/3/0/3/130323967/b59196a57a.pdfIn PDF document text
    • http://beyondthedunescottage.ca/uploads/1/3/0/8/130814052/bosogofabadu.pdfIn PDF document text
    • http://lachlanvalleyroofing.com/uploads/1/3/0/7/130738676/wovojoduwepixoworan.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_off000067db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DB 10352 bytes
SHA-256: d880c578a38ea51bb1083e28781d28b490fb1e12eccd0539dddf24c68bfca37e

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