Malicious PDF — malware analysis report

Static analysis result for SHA-256 5946e7b3f46ace2a…

MALICIOUS

PDF

72.1 KB Created: 2021-02-15 06:39:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1700945babf08bd6dc786f930317d8fd SHA-1: a6e99ca88168bf9c550c9915afd2bdc809aa4b22 SHA-256: 5946e7b3f46ace2ae61967bd450cad22d14be1fcb5d1cff3a4871636fea93558
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/wix?keyword=tachiyomi+apk+download PDF link annotation
    • https://sajosapisede.weebly.com/uploads/1/3/4/3/134344890/vutikomod.pdfIn PDF document text
    • https://ziziwatir.weebly.com/uploads/1/3/4/7/134713039/6e9aca23952.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365539/normal_5fee7b4811e36.pdfIn PDF document text
    • http://midokasek.iblogger.org/badrinath_movie_in_hd.pdfIn PDF document text
    • https://luvodufugatese.weebly.com/uploads/1/3/4/8/134893210/xobetasobaviz.pdfIn PDF document text
    • https://livesagu.weebly.com/uploads/1/3/1/4/131437401/jugexunikepuxig.pdfIn PDF document text
    • https://dalibigexewekef.weebly.com/uploads/1/3/2/7/132712129/dadoburo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450514/normal_5fcea0372aa7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414486/normal_6029dae389a23.pdfIn PDF document text
    • http://gixuzozubo.22web.org/64213635603.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476954/normal_5ff2c1c0d8463.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nunitew.rf.gd/rosenukam.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_off0000de7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7D 5248 bytes
SHA-256: 3d4dc80f1e80042bf23fa9beb0ae732c18eb45dff7f0be9ef43586cf371586de
font_01_sfnt_off0000f049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF049 10276 bytes
SHA-256: 8ffe34d6bdfd88c1bafbd7d8b9b4a6b826ad84403d9e0fe3269833fbfcd4a847