Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb506c0fd9df28c1…

MALICIOUS

PDF

92.5 KB Created: 2021-02-24 12:41:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6e32e4ce2d935222ee854f0593d3a9d7 SHA-1: 261673be08fefc9f4b8c193857eb0c8de63a6e16 SHA-256: bb506c0fd9df28c1701a2bf8887e7a6a162315000a47dba60fd8b3be6c9ecfb3
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, with one specifically linked to a search term for 'Gloomhaven ability cards app', suggesting a phishing or scam lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jottigo.ru/123?utm_term=gloomhaven+ability+cards+app PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465147/normal_5fce50b4c2f38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487663/normal_603526e9d88b2.pdfIn PDF document text
    • http://slimerecipe.org/640817949313dekl.pdfIn PDF document text
    • http://islta.fun/58822235814elsv3.pdfIn PDF document text
    • http://moshon.space/bajasuxebilampflc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374857/normal_600bc722429f4.pdfIn PDF document text
    • http://bufo.online/rizenavubud3ml7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451220/normal_602c528ebd6b8.pdfIn PDF document text
    • https://xabesokexiba.weebly.com/uploads/1/3/4/3/134327988/9251919.pdfIn PDF document text
    • http://graatorama.fun/19061466660pe001.pdfIn PDF document text
    • http://itchia.space/39849202361fk95c.pdfIn PDF document text
    • http://digitalcalakk1.xyz/granny_square_blanket_border_crochetpdpf6.pdfIn PDF document text
    • https://luzulobopado.weebly.com/uploads/1/3/2/6/132681737/85eb56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366639/normal_5fe2f8778d30a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/timituvupame/84447276474.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/66818168409.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/awok_ksa_apk.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_off00012c6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C6F 5648 bytes
SHA-256: 32b7bd85e4eb11ef7113b7f43437be27989a54771d98a747775ca347f2ee4003
font_01_sfnt_off00013f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F73 11024 bytes
SHA-256: f3e09a65c2c5c55a2bd66b67bd4bd46e8fa8a7cae67c35dc8fa3961d5b191e79

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