Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9a46faa08829ff…

MALICIOUS

PDF

84.6 KB Created: 2021-03-17 16:00:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: db9bf8ae1238b66ed79ef83b60c0c166 SHA-1: 8aea8c058e1337e2e83aef5bc6deba5775e32fbb SHA-256: ed9a46faa08829ff0aab2f64350fd3ba9d4db8b60f78d13f67e2207decead090
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains numerous external links, suggesting it functions as a link farm or phishing lure. The primary URL, 'https://golowaki.ru/wb?keyword=divina%20commedia%20canto%20i%20pdf', indicates a potential SEO manipulation or content-piracy scheme designed to attract unsuspecting users.

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://golowaki.ru/wb?keyword=divina%20commedia%20canto%20i%20pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365552/normal_5fe13c0d1f6a8.pdfIn PDF document text
    • http://zoo-taxi.site/risabovabinovikenikuzaxer9o3mv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496153/normal_5fc5ee2f3d627.pdfIn PDF document text
    • http://hookup757.fun/acknowledgement_for_project_report_mbau2ejf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0b21792c-a699-4cf4-8833-5910c6ad58af.filesusr.com/ugd/b0b521_cad7152c9012413090336675c882afee.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fodose/21701872828.pdfIn PDF document text
    • https://d09251a9-b09e-4077-8ccb-24037f005f7b.filesusr.com/ugd/a6ce17_d83e08fb43ad4515ae67147e20509828.pdf?index=trueIn PDF document text
    • https://3a00e800-a8eb-44ae-aafc-ae9aecab8e06.filesusr.com/ugd/1715bf_dd966163897647f7ac03aaea950b595e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/63987092998.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/wamalakovekanurejodobaku.pdfIn PDF document text
    • http://pimekawuxa.epizy.com/animal_coloring_sheets_printable.pdfIn PDF document text
    • http://sosedowogizobi.rf.gd/48055512708.pdfIn PDF document text
    • https://30cc9e9c-6145-4029-bfdc-d0561bdb3a10.filesusr.com/ugd/0dcf4b_9e72790bfce143adbc043dd7c6319e36.pdf?index=trueIn PDF document text
    • http://gugigiser.rf.gd/37370096481.pdfIn PDF document text
    • https://0ea1ff7f-05b3-43a2-9744-178351a05ed1.filesusr.com/ugd/01f9b9_568c26d417114cd39c37c3a3f9be3925.pdf?index=trueIn PDF document text
    • https://09972071-4174-499b-90b1-de3619f59f53.filesusr.com/ugd/d1c05f_99035c47be7f4061a119be912b712d44.pdf?index=trueIn PDF document text
    • http://pododugeb.rf.gd/filariasis_2020.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_off00010cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CEC 5052 bytes
SHA-256: 11e539d1c7fee8d64d08de0d7d90bbeb6e336bf1c95cd8ad6d293ad03fb30b32
font_01_sfnt_off00011e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1E 11892 bytes
SHA-256: e3d5174cdcbd05efb20a41a134365d667c0539f96d8ca580ef5e9eff8b2d8bd4

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