Malicious PDF — malware analysis report

Static analysis result for SHA-256 530a5e896f734cac…

MALICIOUS

PDF

69.2 KB Created: 2021-02-09 00:05:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9b4e606724f298b9a3039602b7f99b33 SHA-1: 740cec1eb01884db52f3d7ce46cf0d32ec33826b SHA-256: 530a5e896f734cac2b2b3da6c3e24bafbb5dce217e63f3988033398821366c94
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://maypoin.ru/wb?keyword=lg%20v30%20verizon%20update%20android%209 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366011/normal_6012dfd4a03bf.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/fELz00q/zajubuzozekanumef.pdfIn PDF document text
    • http://wuwulobuxalajut.iblogger.org/ac_market_2019_latest_version.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367019/normal_5ff0e9115cf23.pdfIn PDF document text
    • https://diwoneguni.weebly.com/uploads/1/3/1/4/131407083/gopijeriberuraseji.pdfIn PDF document text
    • https://runidodejifam.weebly.com/uploads/1/3/4/0/134040950/miwatodilex-fewevegizen-bovobagirudil-wowevitogevogil.pdfIn PDF document text
    • https://kelogukagikuval.weebly.com/uploads/1/3/0/7/130739039/vixaxot_madokebunas_tokesajixalu.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/d76765304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419650/normal_6017753c77dcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416143/normal_5fe786ce01844.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393502/normal_60002b0e6e472.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416927/normal_6007c61e54531.pdfIn PDF document text
    • http://septiki-rf.website/remington_597_manual59ocb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476780/normal_6012d6188cc00.pdfIn PDF document text
    • http://pusuwanoxanopo.22web.org/xuwifejebuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d09c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD09C 5432 bytes
SHA-256: b7e12bb1e9c7e42e652d0aefdef5fe308f088a18c3a396e34f34389809e61e49
font_01_sfnt_off0000e340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE340 10368 bytes
SHA-256: 462900595c7cac3f7ff836c5064dcadc5b33b90b5ad227c9d8438985a72cf79e