Malicious PDF — malware analysis report

Static analysis result for SHA-256 871ec241e4495f75…

MALICIOUS

PDF

38.7 KB Created: 2020-05-23 08:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcb4651f6abcad85157f29b482e3cc78 SHA-1: 6ea87bac0e448f9ea49d13c99c31466d7c8361a6 SHA-256: 871ec241e4495f7564e786adfbbb4465f2a2ccd36969cacaaa7932be8f359bed
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed to host malicious content. The document body, though partially corrupted, contains a 'letter of resignation' lure and an embedded URL, indicating a social engineering attempt to trick the user into downloading a payload. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://9mn3i.bpmtc.com/uploads/1/3/0/6/130603688/130603688.html#letter+of+resignation+2+weeks+notice PDF link annotation
    • http://el-equipo.com/uploads/1/3/1/4/131407823/zipifidabafope.pdfIn PDF document text
    • http://glamievents.com/uploads/1/3/0/6/130639214/xemarabuxobunodado.pdfIn PDF document text
    • http://mgreinigung.com/uploads/1/3/0/6/130605482/7758244.pdfIn PDF document text
    • http://wol-law.com/uploads/1/3/0/4/130476214/6d0fbef7123edff.pdfIn PDF document text
    • http://maceventsco.com/uploads/1/3/0/6/130621857/kufagezafikolid.pdfIn PDF document text
    • http://pittville-apartments.com/uploads/1/3/0/4/130483616/ca73ac09.pdfIn PDF document text
    • http://washcupbox.com/uploads/1/3/1/3/131380582/motora.pdfIn PDF document text
    • http://lotusfamilycommunitysynergy.org/uploads/1/3/0/6/130605347/7d4fd0563e.pdfIn PDF document text
    • http://kaliuokapaakai.org/uploads/1/3/0/8/130814355/muwegepo-roxobazovifinun-jumijum.pdfIn PDF document text
    • http://spelljoy.org/uploads/1/3/0/7/130739446/3406e64af.pdfIn PDF document text
    • http://randomjourney.net/uploads/1/3/1/0/131070329/2977038.pdfIn PDF document text
    • http://meridianadvisorsusa.net/uploads/1/3/0/2/130272339/jagowugetojadet.pdfIn PDF document text
    • http://harinet.net/uploads/1/3/0/3/130323937/263347749a7d7.pdfIn PDF document text
    • http://trophystrategies.com/uploads/1/3/0/7/130740013/339fe9258cdd8f.pdfIn PDF document text
    • http://kaleidoscope-style.com/uploads/1/3/0/2/130288962/kitanaposawewe.pdfIn PDF document text
    • http://thepriceofjoy.com/uploads/1/3/0/5/130551066/60e973.pdfIn PDF document text
    • http://spruikey.com/uploads/1/3/0/7/130738646/179f2ca4e5d3a9.pdfIn PDF document text
    • http://ftbk.net/uploads/1/3/0/7/130775297/gopekuxizinab.pdfIn PDF document text
    • http://mariettasquarefarmersmarket.net/uploads/1/3/1/3/131381886/e7777f9c67.pdfIn PDF document text
    • http://clickshoppingonline.com/uploads/1/3/1/3/131383544/2897858.pdfIn PDF document text
    • http://trafficoriental.net/uploads/1/3/1/4/131409717/wowufabinafupenekew.pdfIn PDF document text
    • http://christikersten.com/uploads/1/3/0/2/130288600/pavat_juzisifuj.pdfIn PDF document text
    • http://tlicioustreats.com/uploads/1/3/0/4/130488243/8325cc62.pdfIn PDF document text
    • http://juneausquared.com/uploads/1/3/0/2/130270761/01c925af3b2.pdfIn PDF document text
    • http://oyvezmir.com/uploads/1/3/0/7/130739744/770786.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_off00006c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C29 9988 bytes
SHA-256: ada373dcc4f9de7126c2fb44bc962cd49774eb3737cb3ecf93378eed546eaa99

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