Malicious PDF — malware analysis report

Static analysis result for SHA-256 562779fd9aca1ca9…

MALICIOUS

PDF

134.3 KB Created: 2021-02-12 12:36:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 14485b76ecceb0491b54d13f5872bf79 SHA-1: 93cd266bd48f6f002c205bebbf5d019cefc5fe8c SHA-256: 562779fd9aca1ca98651bb9f83f48410e4121d85fda5a6443f206098ad701a22
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The PDF contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting an attempt to redirect users to malicious content. The presence of external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/123?utm_term=biggest+wolf+ever+seen PDF link annotation
    • https://kesakoti.weebly.com/uploads/1/3/1/0/131070149/ed0eae8f7.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/MenjcyG/bubbleland_laundry_near_me.pdfIn PDF document text
    • https://telogedibosujo.weebly.com/uploads/1/3/1/4/131438044/407753ed52709d.pdfIn PDF document text
    • https://sulagumafiwez.weebly.com/uploads/1/3/1/3/131383207/7575028.pdfIn PDF document text
    • https://cdn.sqhk.co/firumefetev/jjShd63/the_office_manager_in_spanish.pdfIn PDF document text
    • https://lopatitegadusi.weebly.com/uploads/1/3/5/3/135311006/9800198.pdfIn PDF document text
    • https://verefatodefi.weebly.com/uploads/1/3/4/7/134722939/zoruv_bumife_fobasugag.pdfIn PDF document text
    • https://vowevabejera.weebly.com/uploads/1/3/0/7/130775986/5312263.pdfIn PDF document text
    • https://nifirasevaxo.weebly.com/uploads/1/3/4/7/134756957/5437722.pdfIn PDF document text
    • https://cdn.sqhk.co/kagalitisup/jiaibgj/offline_voice_assistant_for_android_download.pdfIn PDF document text
    • https://tagorawijetix.weebly.com/uploads/1/3/5/3/135392874/18bf05595470.pdfIn PDF document text
    • https://fuwamelewupo.weebly.com/uploads/1/3/4/1/134131589/9183016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://genenapukiral.epizy.com/27424562597.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/induction_motor_protection_system_project_report.pdfIn PDF document text
    • http://jeputujakajaj.epizy.com/67623595796.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/bt_movie_site.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/pevoduzagatutipafarizavan.pdfIn PDF document text
    • http://vumuvewegoseme.epizy.com/30063242348.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C707 4924 bytes
SHA-256: 471ed38fd51bbcbac42b8dbc057a5d1a1104977983d4d15a44f88b14f13f7a08
font_01_sfnt_off0001d7f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D7F8 1716 bytes
SHA-256: 70b844f74996fcee5e1d27ce90af7085dab18ef8498285b96f5f41c426451930
font_02_sfnt_off0001e09e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E09E 13740 bytes
SHA-256: 6762906ab0aaa024f41cd704849bfaeea6576be469c88f0d7afe6fadd856a4cd

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