Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fe3d6d5c9ba88f1…

MALICIOUS

PDF

73.4 KB Created: 2021-01-18 05:40:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 0932151a511971a6cf48b9e1425085e1 SHA-1: 9751e415f16bc24f6892c4a083e959d996af4a5e SHA-256: 6fe3d6d5c9ba88f1b93ddc262300c5af527e29639d3337872d7e5c292e4fce85
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including critical detections for malicious redirector links and ML classification. The embedded links, such as 'https://gettraff.ru/123?utm_term=is+texas+a+no+fault+state+when+it+comes+to+divorce', are designed to lead users to malicious infrastructure. The document's structure and link farm characteristics suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=is+texas+a+no+fault+state+when+it+comes+to+divorce In PDF document text
    • https://xasukibumit.weebly.com/uploads/1/3/4/7/134749231/vimuniz.pdfIn PDF document text
    • https://cdn.sqhk.co/gubujurit/nhiulii/feed_the_monkey_counting_game.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/BCjzggm/kelemuluzizuwexotodol.pdfIn PDF document text
    • http://guwajokuxo.22web.org/rebajepunebu.pdfIn PDF document text
    • http://ziwavabewite.66ghz.com/compressive_strength_of_mortar_cubes.pdfIn PDF document text
    • https://cdn.sqhk.co/mapigusene/RTFJqPD/jetujiwabisugojusis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402246/normal_5f94c643d84f9.pdfIn PDF document text
    • http://borezopesane.22web.org/runonofolut.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/Xmge1hj/2020_ford_super_snake_truck_specs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393772/normal_5fc68c09e8eef.pdfIn PDF document text
    • https://gezeteweni.weebly.com/uploads/1/3/4/0/134040803/pepagi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484997/normal_5fcc1e1aa1fe2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465908/normal_5ff3f5224e3ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pewesinelukaveb.epizy.com/poe_atziri_run_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/lenovo_g50_bios_update.pdfIn PDF document text
    • http://sanemogoxidiwus.epizy.com/66630313815.pdfIn PDF document text
    • http://jasosuwer.epizy.com/pgt_computer_science_book_free.pdfIn PDF document text
    • http://famebod.epizy.com/xevabuximejusarurowusuwe.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/osrs_abby_sire_guide.pdfIn PDF document text
    • http://totofexux.epizy.com/kixiwulemukosatiwu.pdfIn PDF document text
    • http://renirorevebu.epizy.com/math-_drills_answer_key_rotations.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/how_to_draw_holding_hands_step_by_step.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_off0000e3a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A4 5420 bytes
SHA-256: c40b464980944e8ee851702157794124a78554c70755baa6fec4887eba4dc619
font_01_sfnt_off0000f603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF603 9884 bytes
SHA-256: 94c32cfb8ccab4eb7e4e0275d802a401974987d391ec1d4a7793f44c6ddf3905

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