Malicious PDF — malware analysis report

Static analysis result for SHA-256 aabadd67edf188dc…

MALICIOUS

PDF

82.4 KB Created: 2021-04-02 11:59:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f97a8574f8ee6e420e9caab9ea7a5258 SHA-1: 919f8e8eef9b72044c699a48056c2daa1a834570 SHA-256: aabadd67edf188dc40a033d55e3623ffc3385695bf17c9b9a70af4ad0e8543bd
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://jumiwimov.ru/strik?utm_term=2001+bayliner+capri+service+manual PDF link annotation
    • http://daddytestit.xyz/551525080836713m.pdfIn PDF document text
    • http://bukezisafa.iblogger.org/lixutozuvitofovo.pdfIn PDF document text
    • http://xujadawowupu.scienceontheweb.net/lokmat_newspaper_aurangabad_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_6052b2dce24b8.pdfIn PDF document text
    • http://wedurorokim.mypressonline.com/biodynamic_organic_and_natural_winemaking_sustainable_viticulture_and_viniculture.pdfIn PDF document text
    • http://sks-expertiza.ru/important_articles_of_indian_constitution_for_ias_examq2q2f.pdfIn PDF document text
    • http://birobupalojasux.iblogger.org/kepilovolurixo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466151/normal_5ff61abcc2384.pdfIn PDF document text
    • http://daliadiago.com/35930668842rxm10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427091/normal_603b5d7c546c9.pdfIn PDF document text
    • http://meetsalle.xyz/wibozowojixasituvosenudowjdjtt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382190/normal_601a51338b92d.pdfIn PDF document text
    • http://presentinsta.online/aua_guidelines_male_urethral_stricture53mrj.pdfIn PDF document text
    • http://rankingcoach-apps.com/lg_ice_maker_not_working_youtubecklwg.pdfIn PDF document text
    • http://sovetnik53.ru/91823312589ivg6s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471092/normal_5ff0a66d031ca.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/why_is_my_tv_screen_have_lines.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/868ed0f5-0e63-45b9-957d-154ff32c029b/3630617009.pdfIn PDF document text
    • http://pupagerirawax.myartsonline.com/can_you_flat_tow_a_dodge_durango_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d03436bb-790b-4a94-8b52-0ec88f959d98/goramafexekagitofari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/513e185f-c31e-4e30-9fca-01955d0996d4/xadebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50b1e4e6-bbbd-4289-895e-a51009a3b503/werakuxuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc1ab3c4-36e3-40b5-8ca7-1fea8c80a9ab/appion_g5_twin_rebuild_kit.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B3 5612 bytes
SHA-256: 712f529eaeca63773616f12302ade955d0314a6afd10af23001ddca0f7943f0d
font_01_sfnt_off000114bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114BD 11572 bytes
SHA-256: 1e613769556bd5a08b55705b7850a2a7ae5d686853fdbe7baa953ce5a6930941

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