Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c469118df684271…

MALICIOUS

PDF

51.1 KB Created: 2020-03-30 08:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: 5d60a5336b6b9804a5f5a2e58b2a1d7d SHA-1: 23a151d7e4d1f315013b8827e57d091dd24b76ef SHA-256: 3c469118df684271243c9cba3240131aee763b44f9795c144a3ebeabd6a99181
96 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary purpose appears to be directing users to a large collection of other PDF documents hosted on various domains. The embedded URLs suggest a link farm or SEO manipulation tactic, potentially to distribute malicious content or engage in phishing. No scripts were extracted from this sample.

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://princess-crown.lucky1st.com/uploads/1/3/1/3/131379329/131379329.html#funes+el+memorioso+cuento+de+borges PDF link annotation
    • http://beyond-social-media.com/uploads/1/3/0/5/130588290/bovojidatuva-xorisutawatowam-furipe-wulorubawib.pdfIn PDF document text
    • http://swilliamsphotos.com/uploads/1/3/0/2/130288392/wejemug.pdfIn PDF document text
    • http://parrysbakery.com/uploads/1/3/0/5/130588380/9f3678aa.pdfIn PDF document text
    • http://ellandbe.com/uploads/1/3/0/7/130775191/3866878.pdfIn PDF document text
    • http://discerningadvisor.com/uploads/1/3/0/3/130313145/zakixoxatu.pdfIn PDF document text
    • http://limit2109.com/uploads/1/3/0/6/130620222/jagufub-xovejitiri-duzepadujaletap.pdfIn PDF document text
    • http://myamericanbuilthomes.com/uploads/1/3/0/8/130874281/249c2b2edd4f.pdfIn PDF document text
    • http://waitvision.com/uploads/1/3/0/3/130313086/66e5bfc472d9a.pdfIn PDF document text
    • http://beclaims.com/uploads/1/3/0/2/130288830/1850016.pdfIn PDF document text
    • http://lunchboxcafeny.com/uploads/1/3/0/7/130739126/kokoroxin.pdfIn PDF document text
    • http://lesleyyx1.com/uploads/1/3/1/4/131408032/padugajematod.pdfIn PDF document text
    • http://doggotrends.com/uploads/1/3/0/5/130588724/94f99.pdfIn PDF document text
    • http://youngpeacemakerscamp.com/uploads/1/3/0/2/130271232/3700342.pdfIn PDF document text
    • http://vets-code.org/uploads/1/3/0/5/130538870/dd9d2a3b0.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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000950f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x950F 8504 bytes
SHA-256: 4784bdd71526a3bf60d4b2faf672c03c7ad96f08a9adbd6042e40daeafa67915
font_01_sfnt_off0000b40d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB40D 2616 bytes
SHA-256: d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04

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