Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d296dee5b92f98…

MALICIOUS

PDF

85.6 KB Created: 2021-03-14 10:45:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2874ce5b9b6b10b558807b95e120479d SHA-1: 9c25009a7c9d3b40adb5792296a917787bb4914b SHA-256: 97d296dee5b92f9867dcb0d0936e24fd3e46974773cb07222999756b0c427aef
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://ponafet.ru/123?utm_term=alphabet+printable+colouring+sheets PDF link annotation
    • https://tixasenuwafoja.weebly.com/uploads/1/3/4/6/134658158/telit-didov-selominivodu.pdfIn PDF document text
    • https://nenejiremox.weebly.com/uploads/1/3/0/9/130969141/36aadda6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380070/normal_6027f57908a4d.pdfIn PDF document text
    • https://lelusujizuzu.weebly.com/uploads/1/3/1/4/131438438/jurozapunopotitorevo.pdfIn PDF document text
    • http://tinivoze.22web.org/dodidizuzizugogil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463543/normal_600b48687d52b.pdfIn PDF document text
    • http://viteroludobano.mypressonline.com/zaloni.pdfIn PDF document text
    • https://topigofifudonif.weebly.com/uploads/1/3/5/3/135304546/koxafekofumirim.pdfIn PDF document text
    • https://wegonugu.weebly.com/uploads/1/3/4/0/134040733/kudotozepogu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nibopinalilabaj.onlinewebshop.net/welabujojebono.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/widuzidebipovuxiperanu.pdfIn PDF document text
    • http://tidokapisu.epizy.com/47562660581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ced12abb-8a61-4c62-84a4-eb343bbaaed2/how_to_reset_garage_door_opener_liftmaster.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7ce5155-b20c-4c3e-b0eb-27077831faa7/slimpar_56_battery.pdfIn PDF document text
    • http://tutivute.epizy.com/97912038898.pdfIn PDF document text
    • http://suzuzozadigij.epizy.com/dazijut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/186dd0f6-25ba-48fb-ae0f-376fda65d838/61740490697.pdfIn PDF document text
    • http://xabenigirujufoz.epizy.com/xidegemoto.pdfIn PDF document text
    • http://jirabasojexosud.atwebpages.com/72375026327.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111C4 5324 bytes
SHA-256: d9b98a9d513c54b4f02df7d5071cbf40bb26c36ea556e47808e6f7b86e94fe07
font_01_sfnt_off000123d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123D1 11100 bytes
SHA-256: 4532bbc27bfc3c5f6c6fbc04ae103a9330700d1309564ecadec8dcfc6db8378a

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