Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ab032cf2cc68766…

MALICIOUS

PDF

82.2 KB Created: 2021-03-18 14:54:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d73692eb4dac361136e4119b4c7a8fb5 SHA-1: de98e02c90f85bd78c67bfe3fc11ba15f0f3c0f9 SHA-256: 9ab032cf2cc68766b7374c8be6a759a2da162ae67d94a94841929050e2e5c1a5
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a site offering game downloads, suggesting a lure for users. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=petz+5+download+full+game+free
    • https://cdn-cms.f-static.net/uploads/4409123/normal_6015ade03220c.pdf
    • https://cdn.sqhk.co/kinemefuwa/iagihjT/odd_and_even_numbers_ks1_worksheet.pdf
    • https://cdn-cms.f-static.net/uploads/4387928/normal_604643ed09a6c.pdf
    • https://cdn.sqhk.co/votijavos/chhichb/how_to_become_a_homeschool_teacher_in_nc.pdf
    • https://cdn.sqhk.co/kawurefeki/hYgfPpR/my_coffee_shop_coffeehouse_management_games.pdf
    • https://cdn.sqhk.co/bafujifi/gfA6LOm/shooter_movie_cast_old_man.pdf
    • https://cdn.sqhk.co/nupozifulija/flEjjgj/42251829090.pdf
    • http://thelait.pro/vuxasumowes4madv.pdf
    • https://cdn.sqhk.co/bajowekununa/ghdHGjh/captions_for_couple_pictures_in_spanish.pdf
    • https://cdn.sqhk.co/rorefevobo/ggibjfJ/14552277638.pdf
    • https://cdn.sqhk.co/kizulajeli/vheAgh3/dodazilu.pdf
    • https://static.s123-cdn-static.com/uploads/4502178/normal_5fe178c8d5263.pdf
    • https://cdn.sqhk.co/vemudumuxixu/kjhhfPj/41633339283.pdf
    • https://static.s123-cdn-static.com/uploads/4450640/normal_5fde5aec8bedd.pdf
    • https://cdn.sqhk.co/nogugojuri/eBavgfo/uefa_champions_league_results_live_score.pdf
    • http://letxxnx.org/cuales_son_las_mejores_ciudades_para_trabajar_en_estados_unidosmwmga.pdf
    • https://cdn.sqhk.co/vuwipabobatu/Wieihhc/sakedubavigebosimarigaj.pdf
    • http://shtangennstutkupitseychas.xyz/topisexirurefidatutoludum7omt.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://7a1f2a0d-094a-4466-88af-72a4af93b9fa.filesusr.com/ugd/22739b_cfec138e82064d06be3ef0eadcd1444c.pdf?index=true
    • https://6b5d12f1-3bbc-48af-9ddb-5430d2fe15e7.filesusr.com/ugd/3bf302_c3b4e37d994449f0929315701265f4f1.pdf?index=true
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_01db9e4b022d4219b3b59423adbf2a15.pdf?index=true
    • https://76c9fb28-c10e-4950-85be-37de24a2ede8.filesusr.com/ugd/fa32a6_7d9317565f0b42118f96d592d2dda26a.pdf?index=true
    • https://9f349447-249b-4747-956a-316fe86e371b.filesusr.com/ugd/d2b720_da0b3b6b2aa845c6be7b34d91b28e54a.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebb5.bin
51733fdcbcd8668acbd75e32485c4ca673d7a039dfea4d3bf00447b3b1b3c690		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB5 5152 bytes
font_01_sfnt_off0000fd42.bin
9d66a68b6e760451a3ef1fedbe2a9571f72d2aa08f3bc989e70c1e1fb6c2f8d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD42 14296 bytes
font_02_sfnt_off00012b2f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B2F 4324 bytes

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