Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddebb16b5c45ef70…

MALICIOUS

PDF

89.2 KB Created: 2021-02-23 16:09:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b71627494c2bdb0ed48a121aed60c2df SHA-1: b0dc3358b4613f236ba8bfc91be5ba553732f764 SHA-256: ddebb16b5c45ef70d1adffd53a6dedb00eadcf14dff992d934cc4bdecd42b133
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 and an ML classifier, indicating malicious intent. The document contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting a phishing or malware distribution campaign. The presence of external URIs and the overall structure strongly suggest the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=lg+tribute+5+user+manual PDF link annotation
    • https://satefavazavapof.weebly.com/uploads/1/3/4/7/134718375/mixefepiwenoxur.pdfIn PDF document text
    • https://dobopekajami.weebly.com/uploads/1/3/4/3/134314215/ribewogi-doxumovizimuda-pinuz.pdfIn PDF document text
    • https://cdn.sqhk.co/fakozunada/ihNQdYX/gsmarena_pixel_5g.pdfIn PDF document text
    • https://taleputara.weebly.com/uploads/1/3/4/3/134305900/lemisepazilabok_debot_dadiwebexuwigo.pdfIn PDF document text
    • http://nutristrike-shop.ru/25568417597hib8e.pdfIn PDF document text
    • https://bebibamo.weebly.com/uploads/1/3/1/4/131438385/zabatamolajavosaji.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/mwHhjsD/donkey_kong_classic_arcade_games.pdfIn PDF document text
    • https://cdn.sqhk.co/mujutuzidip/Ch1jcic/99833044883.pdfIn PDF document text
    • https://cdn.sqhk.co/luwonowuwig/a9CTFkK/sherwin_williams_paint_color_crushed_ice.pdfIn PDF document text
    • https://temabodanifow.weebly.com/uploads/1/3/1/4/131454916/9215fbc16231e3.pdfIn PDF document text
    • http://s-tochka.ru/tofiwevunun5f05.pdfIn PDF document text
    • http://detonic-shop.website/cabela_dehydrator_instructionsex0jb.pdfIn PDF document text
    • https://cdn.sqhk.co/resesexiraf/gfHcgcF/81003457224.pdfIn PDF document text
    • https://zabugejagovim.weebly.com/uploads/1/3/1/6/131637755/c909393.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/ehgjchd/71585699611.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/cIfihja/zisevirewinozimanosunime.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fosalizuzu/famous_books_and_authors_list_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/how_many_btus_does_a_22kw_generator_use.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_off000114f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F7 4984 bytes
SHA-256: 54972a59d1e40f7fe13fbbcad12ab92bf6f240e75a2fa5e514c745cd27dcead1
font_01_sfnt_off000125cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125CF 10424 bytes
SHA-256: a9abde7afa9c01665c5c3d12ea20895ce9bce1e44ceeee76b8c4a831b85d51bd
font_02_sfnt_off0001496b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1496B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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