Malicious PDF — malware analysis report

Static analysis result for SHA-256 0feffd643b027c01…

MALICIOUS

PDF

79.9 KB Created: 2020-11-18 05:27:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 65521b3e0a177df6a33f8425101a1220 SHA-1: 2ebd97d795bcb775cc3eabfcd07e85315bb715a6 SHA-256: 0feffd643b027c0179316242a4ba7eb2f3a3b4d09d6a290c4c6d0c37c77c295e
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier score of 0.999758 strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafficel.ru/strik?utm_term=2011+secondary+solutions+macbeth+literature+guide+answers PDF link annotation
    • https://kuxilididid.weebly.com/uploads/1/3/4/3/134387830/2460069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409093/normal_5fad936711e40.pdfIn PDF document text
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/dujulovukopofelig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368246/normal_5f9700680d90e.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/difipel-fubibopizabo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477615/normal_5faf602f92536.pdfIn PDF document text
    • https://pivamaxisogen.weebly.com/uploads/1/3/4/4/134481881/16956.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_5f93811d45276.pdfIn PDF document text
    • https://rupunapu.weebly.com/uploads/1/3/4/3/134354814/2e132cdd97b03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408987/normal_5f94f5d1290af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502500/normal_5fb29fe80d981.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_5f8e2f7444f60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377098/normal_5f8c61f7d9bb0.pdfIn PDF document text
    • https://xorusisu.weebly.com/uploads/1/3/4/3/134314808/ravinin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365602/normal_5f879c7cb3b71.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5b4f4f1-6ba1-4100-a0d1-2e47aa4681ae/55136237281.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D4 5920 bytes
SHA-256: 787fb186be9717b9f6d43c301a10d4b3019be0b4dce900f7b5721ab29bc6baa7
font_01_sfnt_off00010be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE1 11404 bytes
SHA-256: e8d935a2daf6844407035f6dc294f753de50a2a18c1386ae6f83eb341956a20d

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