Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfedc871c91a2d56…

MALICIOUS

PDF

69.0 KB Created: 2020-05-25 07:14:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 5d2115e94fddbba97084c51a56cb54f3 SHA-1: bf580c4cb6dc4f618f13e0b9871ae482e58c789c SHA-256: cfedc871c91a2d560320a5665f8a18d2c2687bbb900c74c62722f12fe2776162
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, a technique often used for SEO spam or to redirect users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a potential for malicious redirection. No scripts were extracted, limiting further analysis of direct payload delivery.

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://family-enterprises-llc.com/uploads/1/3/0/4/130476859/130476859.html#introductory+statistics+gould+2nd+edition+pdf PDF link annotation
    • http://legacyremodeling.net/uploads/1/3/1/8/131857631/4292762.pdfIn PDF document text
    • http://ravetampa.com/uploads/1/3/0/3/130323392/zemixowozipi.pdfIn PDF document text
    • http://blackdampbrewing.com/uploads/1/3/1/6/131637876/tapifaxe.pdfIn PDF document text
    • http://blog.besimplytimeless.com/uploads/1/3/1/0/131071033/e4db3.pdfIn PDF document text
    • http://granvilleislandfoodiebox.com/uploads/1/3/1/8/131856270/7239754.pdfIn PDF document text
    • http://joannhughes.com/uploads/1/3/0/2/130271185/xinekaxewibexikoxif.pdfIn PDF document text
    • http://industrialcommercialdomestic.com/uploads/1/3/1/6/131637219/fatesezo.pdfIn PDF document text
    • http://host197.carmichaelnl.com/uploads/1/3/0/7/130776858/wajij.pdfIn PDF document text
    • http://caravanadelamor.com/uploads/1/3/1/3/131379749/39e010f1.pdfIn PDF document text
    • http://black-ventures.com/uploads/1/3/1/0/131070521/2d8daec11aba.pdfIn PDF document text
    • http://christinesastri.com/uploads/1/3/0/7/130740252/penipugu.pdfIn PDF document text
    • http://booksbybrucepierce.com/uploads/1/3/1/4/131413550/5852284.pdfIn PDF document text
    • http://qspandp.com/uploads/1/3/0/6/130621337/dunopowerenibu_bigetewakidixe.pdfIn PDF document text
    • http://malloyirishdanceschool.com/uploads/1/3/0/6/130605312/lalajososezijupiv.pdfIn PDF document text
    • http://supportparentsg.com/uploads/1/3/1/4/131454051/f90ba7bf.pdfIn PDF document text
    • http://tiffinsfromhome.com/uploads/1/3/0/5/130589057/0d93c27420dae8f.pdfIn PDF document text
    • http://commediaprod.com/uploads/1/3/1/6/131636852/lejedajevomiz_pawojusalomege_kagegijazoga_tulaboxavaxarup.pdfIn PDF document text
    • http://meganccwalker.com/uploads/1/3/1/3/131383892/gubesar.pdfIn PDF document text
    • http://rebeccaharrisbooks.com/uploads/1/3/0/5/130539203/5908148.pdfIn PDF document text
    • http://bandician.club/uploads/1/3/0/4/130483527/koxoxamugokarad_vuzatununusos_judabadokalob_fobawedaxifotef.pdfIn PDF document text
    • http://alearnersheart.org/uploads/1/3/1/6/131637384/dukel.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 8

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_off0000dff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF5 11032 bytes
SHA-256: d7e54b6f8d5d0d372bc5e6cf507858dd7dfdccc96b0881b02fae8dadc2c93e23

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