Malicious PDF — malware analysis report

Static analysis result for SHA-256 bedea327097b0871…

MALICIOUS

PDF

81.1 KB Created: 2021-03-23 06:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: e8b3e271865da2d1ad6750337be1d178 SHA-1: 061fecd5822d56ad958c6df3b50f89cd620007b4 SHA-256: bedea327097b0871c8da3d459b86fbf30b37dbefc863388a51123967e61c0292
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using such sites to obscure malicious destinations.

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://jottigo.ru/strik?utm_term=como+llenar+una+carta+poder+mexico PDF link annotation
    • http://jadebey-x.com/vomidiwolokizabapoledimq8xlm.pdfIn PDF document text
    • https://cdn.sqhk.co/lulaxujik/jbFhjmv/gunshot_residue_definition.pdfIn PDF document text
    • https://valiwuvubeke.weebly.com/uploads/1/3/4/6/134694219/belumafamow.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/nhgqja7/4k_gaming_wallpaper_free_download.pdfIn PDF document text
    • https://torusakewojowep.weebly.com/uploads/1/3/0/8/130814967/rebidebaf_revigobujaxuk_kopowowas_dazete.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466140/normal_5fd2c05c14a5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371543/normal_60418d8c54ccf.pdfIn PDF document text
    • https://rikumuxazomibib.weebly.com/uploads/1/3/6/0/136082685/3798108.pdfIn PDF document text
    • https://vanizubifimid.weebly.com/uploads/1/3/0/8/130874516/5cbf42bd.pdfIn PDF document text
    • http://clientbluebadge.com/fifty_shades_of_grey_fanfiction_anak1xw4.pdfIn PDF document text
    • https://degevibuv.weebly.com/uploads/1/3/5/3/135316410/viwozebejojozenezu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/222fd15f-5739-49d2-aedd-5eb8b38c22b6/envision_math_workbook_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eb9fb7b-3693-4aff-af04-c21b3cde8971/what_are_good_alkaline_foods.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5029527-550f-4dbe-ac25-41ac710a054c/15481926710.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/bissell_proheat_2x_premier_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/balomopuxuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/768853396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b22a7a2-7211-4e87-8127-9ea3d1d46a10/wozawesapupakometodigesa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF539 5012 bytes
SHA-256: b656ef24dbc5639b1b904ae6458a8d16c66c91baa04a07394931a935f4da4ba7
font_01_sfnt_off00010622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10622 1636 bytes
SHA-256: 1fee037af4a74430cd143506c103db1ce6a4e725c701268b284aa1a5325a9f33
font_02_sfnt_off00010e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E5B 11716 bytes
SHA-256: 12f068b7a2627ce663bd9ce0ac84dc02e30660dd76fd6929ad7623db98495b0a

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