Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed75e81c3844f935…

MALICIOUS

PDF

66.9 KB Created: 2020-12-03 16:38:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 066e175c8bd6edb44f0eb330ac765c56 SHA-1: 1a169cb25e5169f26a7849099cf8187aa8e876ff SHA-256: ed75e81c3844f935c420c1748d91ff275e1497518f258d39fcbed823df388f86
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious sites.

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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://trafffe.ru/aws?utm_term=apc+smart+ups+2200+manual+espa%25C3%25B1ol
    • https://zafimalomaw.weebly.com/uploads/1/3/4/4/134458932/sunaxugo_kavomikubi.pdf
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/3275433726e.pdf
    • https://nimewoguvinu.weebly.com/uploads/1/3/4/4/134433183/zimodabeniki.pdf
    • https://veraweno.weebly.com/uploads/1/3/0/7/130739577/majurarilorafub_poxetedosola_befit.pdf
    • https://cdn-cms.f-static.net/uploads/4366995/normal_5f93f44fae8d4.pdf
    • https://cdn-cms.f-static.net/uploads/4388062/normal_5f8f8bc6a5928.pdf
    • https://nekewagan.weebly.com/uploads/1/3/4/8/134881830/gikeb.pdf
    • https://cdn-cms.f-static.net/uploads/4406456/normal_5fad4d81b5ec4.pdf
    • https://tedawubav.weebly.com/uploads/1/3/4/3/134376018/tupobo.pdf
    • https://wekegakusujesal.weebly.com/uploads/1/3/4/2/134266445/vunumifi_futegomevuteboj.pdf
    • https://tavekudu.weebly.com/uploads/1/3/4/6/134631894/389747e5c132.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c687df39-99bc-417d-a148-2cae35143185/17454853338.pdf
    • https://uploads.strikinglycdn.com/files/82903ee4-52f6-45d2-a574-9fda2db05929/22265457.pdf
    • https://uploads.strikinglycdn.com/files/5aa60082-5edd-45ab-96e1-c31495699231/46947260637.pdf
    • https://uploads.strikinglycdn.com/files/bcd435a4-b9d8-44c2-ab71-d4cab2361cf5/xuwupojem.pdf
    • https://uploads.strikinglycdn.com/files/21c6e532-7ae1-4b97-8e45-afab3bca9331/persona_4_devil_arcana.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000beb7.bin
decac23a783573181d08069bd898bffe0c28e61859120adeedbaa7493d4402aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEB7 5556 bytes
font_01_sfnt_off0000d106.bin
5c50f4cb69aeee5b81095be8e666b92e3326533d48cbc43d292acdadbc1103ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD106 1412 bytes
font_02_sfnt_off0000d8b9.bin
daade43c7ca13af28f2f6ebb903dfbb12e385879ce375ba4aa360eebb247e2a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B9 10496 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.