Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e65f087f9a0ce3…

MALICIOUS

PDF

39.0 KB Created: 2020-04-03 00:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 640a6b6a238b7ddc88e621ad28290d1d SHA-1: 9709e2b887b57ce90a1b41506c0d12004207fb74 SHA-256: d3e65f087f9a0ce371c1b852508db1b16eb1b4b94903a95c6002516e0b9b7482
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are dynamically generated and point to unrelated domains. The document body, though partially obfuscated, references a 'Bose wave radio cd player manual' and includes metadata suggesting it was generated by wkhtmltopdf, indicating a likely SEO link farm or content stuffing tactic. The primary goal appears to be driving traffic to these external sites rather than executing malicious code directly within the PDF.

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://stratford-hvac.com/uploads/1/3/0/5/130588936/130588936.html#bose+wave+radio+cd+player+manual PDF link annotation
    • http://brettmgearing.com/uploads/1/3/1/1/131164424/gawupituvo-vugoladevizu-sevawakaz-zipew.pdfIn PDF document text
    • http://madtownrobotics.com/uploads/1/3/0/7/130738603/zebaf-veluwuzok.pdfIn PDF document text
    • http://annotalegal.com/uploads/1/3/0/7/130775490/597152.pdfIn PDF document text
    • http://truehomeswholesale.com/uploads/1/3/1/4/131453215/8163992.pdfIn PDF document text
    • http://airductcleaningexpertsboyntonbeach.com/uploads/1/3/1/1/131164269/7753536.pdfIn PDF document text
    • http://earthlodgecenter.com/uploads/1/3/0/7/130775950/7700041.pdfIn PDF document text
    • http://pinehillscamp.org/uploads/1/3/0/8/130874435/8916296.pdfIn PDF document text
    • http://solarpowermidatlantic.org/uploads/1/3/0/4/130489417/bakutosegonokefa.pdfIn PDF document text
    • http://rosswooddesigns.com/uploads/1/3/0/7/130775560/9346923.pdfIn PDF document text
    • http://cm-well-done-ltd.com/uploads/1/3/0/6/130604918/8a33c8.pdfIn PDF document text
    • http://autodiscover.c3power.org/uploads/1/3/0/6/130621803/jisolaxewawojir.pdfIn PDF document text
    • http://charlottehqopportunity.com/uploads/1/3/1/3/131379919/lofabe.pdfIn PDF document text
    • http://adagedanceanddrama.com/uploads/1/3/0/8/130874026/1518618.pdfIn PDF document text
    • http://adentaitalia.com/uploads/1/3/1/3/131398045/166af80672e2016.pdfIn PDF document text
    • http://bigcreekkennels.com/uploads/1/3/0/6/130603709/9805259.pdfIn PDF document text
    • http://huckleberryandhoneybee.com/uploads/1/3/1/3/131380725/6586989.pdfIn PDF document text
    • http://livraexpress.ch/uploads/1/3/1/3/131380205/totobak.pdfIn PDF document text
    • http://alychicken.com/uploads/1/3/0/7/130739202/belaxisedokogog.pdfIn PDF document text
    • http://dtaylor88.com/uploads/1/3/1/3/131398215/2307178.pdfIn PDF document text
    • http://atelier-fleuris.com/uploads/1/3/0/6/130621223/joniwoworimakibuler.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: annotalegal.com 4 samples

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_off00006fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE9 7964 bytes
SHA-256: b91fae8ba0b361d372d3f6c31e889915c9e3903d2f02a046e141155d3a785528

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