Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a3e14d78455d560…

MALICIOUS

PDF

69.8 KB Created: 2021-02-15 07:52:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d5f350afc3c65b5518db257b635c4e5e SHA-1: 7a067f9693369266a7e8e199a7a776efb7dcb628 SHA-256: 6a3e14d78455d5609ef4f61200851aeb1d3ecc58c1e7d3cfbcb14b6764288059
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=br+blends+worksheets+for+kindergarten In PDF document text
    • https://dodukitomot.weebly.com/uploads/1/3/1/4/131407143/sipuzo.pdfIn PDF document text
    • https://xomitemekebok.weebly.com/uploads/1/3/4/8/134881854/fikifalizonu.pdfIn PDF document text
    • https://xanowiporak.weebly.com/uploads/1/3/0/8/130814060/07a2d72f2.pdfIn PDF document text
    • https://sazizilas.weebly.com/uploads/1/3/0/8/130874530/3090783.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387060/normal_6018bf8aad866.pdfIn PDF document text
    • https://cdn.sqhk.co/fedijadika/fidpgdD/wakuban.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5fed801fdbe9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451212/normal_5fe78dec2118a.pdfIn PDF document text
    • https://cdn.sqhk.co/wibezudak/8K0hfje/giperibika.pdfIn PDF document text
    • https://sizegetode.weebly.com/uploads/1/3/4/3/134309939/xadusojomi.pdfIn PDF document text
    • https://vajefusuvujob.weebly.com/uploads/1/3/4/4/134464162/giwibobi-mirofunafarezot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413467/normal_600bfd0c912cb.pdfIn PDF document text
    • https://cdn.sqhk.co/vawupemowa/0rgjid6/70508672435.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465149/normal_5fdefbcad97e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412778/normal_6006e2a648787.pdfIn PDF document text
    • https://fukimeremunosav.weebly.com/uploads/1/3/1/3/131379236/betawomuj.pdfIn PDF document text
    • https://luxakanodaz.weebly.com/uploads/1/3/4/5/134589800/keweteje.pdfIn PDF document text
    • https://fejiwapofiji.weebly.com/uploads/1/3/4/6/134699364/8137500.pdfIn PDF document text
    • https://bituxomixa.weebly.com/uploads/1/3/4/1/134131270/vevanumusibiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374359/normal_6028b9192a33b.pdfIn PDF document text
    • https://nakuzimatixibo.weebly.com/uploads/1/3/5/3/135388853/bawasa.pdfIn PDF document text
    • https://milavunaxowe.weebly.com/uploads/1/3/4/7/134717052/lidiji.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_off0000cc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2C 5512 bytes
SHA-256: 2de469ae0a069264e54caa446942e2dadf46765e060ead6d3b00d668c4ae7946
font_01_sfnt_off0000def7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF7 13644 bytes
SHA-256: d942737da8923298cb99fba45b36a91deec87e104be04f33a8712f22004e50e8

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