Malicious PDF — malware analysis report

Static analysis result for SHA-256 4219dd97c73530d9…

MALICIOUS

PDF

69.2 KB Created: 2021-02-25 04:47:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c2256c4fcf7a2740c15aba052a8cf93b SHA-1: 3e60241054532909969e13816652fd4c194dd06e SHA-256: 4219dd97c73530d9af4f232f3c7d33ebb387aafe46e7b0e7e254e0b6663c32c4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=dont+fence+me+in+lyrics+labrinth PDF link annotation
    • http://barbanapoli.moscow/78882743133tiw10.pdfIn PDF document text
    • http://siteznakomstv69.space/xofubewukozipeuc60u.pdfIn PDF document text
    • http://tesar-krd.ru/binenixopef662b1.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/6653681.pdfIn PDF document text
    • http://wei-nmvc.com/kixuboru3h2z.pdfIn PDF document text
    • http://neojust.ru/652773318312wcb0.pdfIn PDF document text
    • http://zuvels.xyz/51997882196nd56.pdfIn PDF document text
    • https://fiwobezamarevev.weebly.com/uploads/1/3/2/7/132740324/rotama_xupen_xedatozox.pdfIn PDF document text
    • https://tiwedipetubed.weebly.com/uploads/1/3/2/8/132816066/bojegadijavibip-foxew-fosowagam-jolufozotulaji.pdfIn PDF document text
    • https://gejodawutu.weebly.com/uploads/1/3/1/1/131164152/duwafex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5fda0fe671e76.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472503/normal_5ff015466ea4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483851/normal_6022c73fd0ebc.pdfIn PDF document text
    • http://watizizilumu.22web.org/21533951561.pdfIn PDF document text
    • https://nudusomezuriful.weebly.com/uploads/1/3/5/3/135387444/terabujuxike.pdfIn PDF document text
    • https://jipubegu.weebly.com/uploads/1/3/1/0/131070098/lemizebadojekev_xakuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dunizolosonon.rf.gd/labuwubobavatilegax.pdfIn PDF document text
    • http://titasukutisun.epizy.com/wumizuzupidipiku.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_off0000d20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20E 5364 bytes
SHA-256: 0a18c90e616d27fdccc35a6cecf950ee62a07e66f771e405f5e295d2d382bef2
font_01_sfnt_off0000e430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE430 10340 bytes
SHA-256: 40138f9a36c2b6d0b9c7ce09dc8ff5e878a612fbfecc95c5a6a37de112c51fba

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