Malicious PDF — malware analysis report

Static analysis result for SHA-256 4879fadf2f13caa2…

MALICIOUS

PDF

44.7 KB Created: 2020-03-14 14:19:23 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: c27dea7e4065dfe1d8500d9e3c3ef975 SHA-1: c47066c497649b4bc7cc323c8db17ac5ce3733b6 SHA-256: 4879fadf2f13caa259446ccfd1811ef1dfe2c38f55d7ed9dceb701200832242d
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files on various domains. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic to malicious content. The ML classifier strongly supports the malicious nature of this PDF. 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://fly5c.bpmtc.com/uploads/1/3/0/5/130551013/130551013.html#projected+balance+sheet+template+excel PDF link annotation
    • http://oliveraconst.com/uploads/1/3/0/2/130288510/fafajotufidavoboj.pdfIn PDF document text
    • http://sunnyheightsretrievers.com/uploads/1/3/0/2/130288637/154843f0e70.pdfIn PDF document text
    • http://strategic-divorce.com/uploads/1/3/0/4/130488199/vumosu-basewuxefawipu-vubajemulanave-vutosupigiza.pdfIn PDF document text
    • http://bestbridalpricesri.com/uploads/1/3/0/3/130313148/lubepebaj.pdfIn PDF document text
    • http://babyak.net/uploads/1/3/0/8/130813497/deferumot.pdfIn PDF document text
    • http://mikewilliamsmusicclasses.com/uploads/1/3/0/5/130539583/mibekemawisajevu.pdfIn PDF document text
    • http://www.painstresstherapy.com/uploads/1/3/0/6/130620937/dedusuledad.pdfIn PDF document text
    • http://richmondnonsense.com/uploads/1/3/0/3/130379292/pexowovitafuzuz_xudoxoji_xelal_nugobumopirew.pdfIn PDF document text
    • http://www.thepaintersperspective.com/uploads/1/3/0/5/130588928/ad0696.pdfIn PDF document text
    • http://pvbcommunications.com/uploads/1/3/0/5/130544131/jawuw-zasawo-wanafu.pdfIn PDF document text
    • http://www.fizzgram.com/uploads/1/3/0/7/130739303/821ccc2.pdfIn PDF document text
    • http://www.twgtrips.com/uploads/1/3/0/7/130740618/1917630.pdfIn PDF document text
    • http://skandinaviskgolfgruepppe.com/uploads/1/3/0/6/130604153/755514.pdfIn PDF document text
    • http://myskinfit.com/uploads/1/3/0/7/130776605/tuvovogu_sunovixiz.pdfIn PDF document text
    • http://enchantedplayhouse.net/uploads/1/3/0/6/130605269/7b237883.pdfIn PDF document text
    • http://flamenart.com/uploads/1/3/0/6/130604210/0bd7a8a5fcaaa.pdfIn PDF document text
    • http://warriorsdmv.org/uploads/1/3/0/4/130483346/e1b70c0aab69a8.pdfIn PDF document text
    • http://5thwoman.com/uploads/1/3/0/5/130589435/waresomo_jeresuxilomaba_lakidurapifo_sowejebolejejuv.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

Related samples 6

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_off0000852f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852F 8460 bytes
SHA-256: c6e0387c9617ecb1551233ec61afeb355b66af83210c937dbad971d15bfcb0bf

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