Malicious PDF — malware analysis report

Static analysis result for SHA-256 239c0f71d92c633b…

MALICIOUS

PDF

38.6 KB Created: 2020-03-25 09:37:54 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-10
MD5: 819e82b439ababe99badcbfe13a5de5b SHA-1: 714c5dbec3f14c49d25b5b4cfb0c53aeeeb9515c SHA-256: 239c0f71d92c633bbe0ef29fe00a7a05350ef0d27df175daab4fc05f48ba9746
96 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded external links, a technique often used for SEO poisoning or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating the document's primary purpose is to redirect users to a large collection of other PDFs hosted on various domains. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine a more specific attack pattern or malware family.

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://pregaming.org/uploads/1/3/0/7/130740086/130740086.html#sas+viya+tips+and+tricks PDF link annotation
    • http://mx.polarisatvs.ca/uploads/1/3/0/7/130739128/4843274.pdfIn PDF document text
    • http://trinityjamestown.net/uploads/1/3/0/7/130775400/1366863.pdfIn PDF document text
    • http://mta-sts.mail.i-kandytattoo.com/uploads/1/3/0/6/130604004/2571182.pdfIn PDF document text
    • http://lilladybugsdesigns.com/uploads/1/3/0/3/130312969/0300eb9.pdfIn PDF document text
    • http://freda.xyz/uploads/1/3/0/6/130621141/70ec70d851.pdfIn PDF document text
    • http://patchezplus.com/uploads/1/3/0/5/130551162/cdc77820.pdfIn PDF document text
    • http://www.predicturban.com/uploads/1/3/0/5/130545173/66cfe3cbab348d.pdfIn PDF document text
    • http://evantwarog.com/uploads/1/3/0/2/130287881/famezijisokosuxu.pdfIn PDF document text
    • http://savepatch.org/uploads/1/3/0/8/130813913/goxaguvuvom.pdfIn PDF document text
    • http://tribents.com/uploads/1/3/0/6/130639780/vuropesax-zasokisomek-godowosukavixem.pdfIn PDF document text
    • http://pluckylearner.org/uploads/1/3/0/5/130544954/fonasosavowe.pdfIn PDF document text
    • http://www.realestateladiesrocks.com/uploads/1/3/0/7/130740013/268800.pdfIn PDF document text
    • http://malaikagarden.com/uploads/1/3/0/6/130604725/sebobekedulu_widipatebunowa_medesuxu_barogat.pdfIn PDF document text
    • http://www.247thcombatengineers.org/uploads/1/3/0/4/130483756/figalukinikexor.pdfIn PDF document text
    • http://fromper.com/uploads/1/3/0/5/130588968/galuje.pdfIn PDF document text
    • http://epiceditvideos.com/uploads/1/3/0/2/130271243/lagalazogej.pdfIn 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
🗂 Part of campaign: bellydancebelles.com 6 samples

Related samples 2

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_off00006cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB9 8504 bytes
SHA-256: 4cc1206b5af0a20540c988a70468152ac429aecc9d646d0e96ae00d8597171c5

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