Malicious PDF — malware analysis report

Static analysis result for SHA-256 b168baed47429e9a…

MALICIOUS

PDF

82.6 KB Created: 2021-03-02 18:26:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 3133afa4fee1d93465a2c5b0cb7e1a61 SHA-1: 1117ad9373bcbb33f1491d54c70f6eff9a6b78b2 SHA-256: b168baed47429e9ae19ef7a7d56654a602a1cb15e6bf6c583b10c79ee1c630e0
166 Risk Score

Malware Insights

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

The PDF document contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document's purpose is to trick the user into believing they need a password to access an archive, a common tactic to bypass gateway scanning. While no scripts were directly extracted, the presence of multiple suspicious URLs and the overall structure strongly suggest a malicious intent to deliver a payload.

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://lozipotod.ru/strik?utm_term=best+way+to+get+a+new+pair+of+glasses+lenses PDF link annotation
    • http://hangzhoumetal.ru/best_lock_lockpickinglawyerygxal.pdfIn PDF document text
    • http://wugafis.66ghz.com/avg_free_win_xp_32_bit.pdfIn PDF document text
    • https://sixikubirosepup.weebly.com/uploads/1/3/3/9/133997641/sepomutazaz-wozaxa-xopinaf.pdfIn PDF document text
    • http://purpless.vip/32198851648zg1pl.pdfIn PDF document text
    • http://naturaitalia.space/breakfast_at_tiffanys_movie_reviewshfb0c.pdfIn PDF document text
    • http://penoligis.22web.org/fokudofujawulivanogi.pdfIn PDF document text
    • http://sokolov.fun/maax_infinity_spa_partsix89i.pdfIn PDF document text
    • https://vaturelola.weebly.com/uploads/1/3/4/7/134704713/f89e98761a.pdfIn PDF document text
    • https://tutonaxubetu.weebly.com/uploads/1/3/5/2/135296536/pilukukuxuzetate.pdfIn PDF document text
    • http://alexandreablog.com/internal_audit_report_sample_iso_9001xvrj4.pdfIn PDF document text
    • http://rofodas.22web.org/33808986481.pdfIn PDF document text
    • http://airet.space/789725730478zlvr.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/f34581eff41f032.pdfIn PDF document text
    • https://voxivunesiru.weebly.com/uploads/1/3/1/4/131407918/mitabupa-tivol-dijedelitasudi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toxiwudogosos.epizy.com/dusasuneko.pdfIn PDF document text
    • http://laletanegimiw.epizy.com/73005149824.pdfIn PDF document text
    • http://badavusepewojo.epizy.com/31942006922.pdfIn PDF document text
    • http://wanedinak.epizy.com/95322631235.pdfIn PDF document text
    • http://furalepoju.rf.gd/wimoxenemugeludowaje.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAC 5312 bytes
SHA-256: 92d5b26f261a830594e748f621c3c0772460f5f8c25b013f0cfd2f9e3770ec99
font_01_sfnt_off0000ffed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFED 11504 bytes
SHA-256: d7a4c3b8792a9ba6e5d698d7f56d0ff5a41b8fabdbb4eea03a2ac6bc1f6191e2
font_02_sfnt_off000125ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125EA 16068 bytes
SHA-256: eaa138153142e1b202f6e132b5b79d2ae4483da1523e62d7c19f47fa5ad289e7

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