Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf1a42692e6df7b2…

MALICIOUS

PDF

43.6 KB Created: 2020-04-17 14:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-07
MD5: 006105b304fdffb41a3fe2ce95ef7f11 SHA-1: 624df1c8bf4e87d8ffc3901260e6f7421a35d8e1 SHA-256: bf1a42692e6df7b258359fd27cb3f3d73b94ffdcf10cf1fa21bb7a80c255a66c
96 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection strategy. The ML classifier also strongly indicated maliciousness. The document body contains fragmented text and URLs, including 'http://dexsound.com/uploads/1/3/0/4/130435835/130435835.html#bing+maps++iphone', which appears to be part of the lure. 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://dexsound.com/uploads/1/3/0/4/130435835/130435835.html#bing+maps++iphone PDF link annotation
    • http://buttonsaustralia.com/uploads/1/3/0/6/130621013/lobozixubin.pdfIn PDF document text
    • http://hellokendall.com/uploads/1/3/0/8/130814310/pejimudavomago_fugejag.pdfIn PDF document text
    • http://evol-usa.com/uploads/1/3/0/4/130477287/dotesat_luwazesifuna.pdfIn PDF document text
    • http://moretonislandfishingcharters.com/uploads/1/3/1/3/131380616/godefirikutuvu.pdfIn PDF document text
    • http://diamond-tiger.com/uploads/1/3/1/1/131164032/sazixejokuwalewegebu.pdfIn PDF document text
    • http://rapidguides.com/uploads/1/3/1/1/131164430/xefadejedewitujuge.pdfIn PDF document text
    • http://thebusinessbrunch.org/uploads/1/3/0/4/130483909/xiduremotakidowozoj.pdfIn PDF document text
    • http://wins-medicine.org/uploads/1/3/1/4/131437370/fagizixejoroju-jisanojaso-lejabesifowusar-zameweb.pdfIn PDF document text
    • http://brucehinternish.com/uploads/1/3/0/7/130739500/satefanotilegumes.pdfIn PDF document text
    • http://janisolson.com/uploads/1/3/0/4/130483385/c2bffcdaabe22.pdfIn PDF document text
    • http://newenglandhomepros.com/uploads/1/3/0/6/130605176/bapototezabemu_fusasat_wixolujubewo.pdfIn PDF document text
    • http://wedrawyoufunny.com/uploads/1/3/0/6/130620420/7604555.pdfIn PDF document text
    • http://bakersfieldtherapeuticbodyworks.com/uploads/1/3/0/9/130969456/168902.pdfIn PDF document text
    • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
    • http://www.typoland.com/In 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000727f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727F 6168 bytes
SHA-256: de6aacb5a55f55b98bf3ae384f96a51051c900e5a59c241f5198d539ce1a3af5
font_01_sfnt_off000081e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E2 8320 bytes
SHA-256: 42f83ea376f7cf66c5c60c699e5d884666284f1e0a75c98b38ee7f478d5f76d2

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