Malicious PDF — malware analysis report

Static analysis result for SHA-256 0db37d770a59cd93…

MALICIOUS

PDF

78.3 KB Created: 2021-02-23 20:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: dd60b07e3871632bce1b2c168379a491 SHA-1: 17277351ecfa546b671e14e70f1d48ac6b5f8f20 SHA-256: 0db37d770a59cd93b87cf0143aeecfedd29a186486df3487e5e8532e5ccd869d
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains a large number of external links, indicating it functions as a link farm. The primary URL, https://bologen.ru/wix?keyword=divinity+original+sin+2+epic+encounters+mod, suggests a potential lure related to gaming or software mods. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links, some hosted on disposable domains, are indicative of a phishing or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://bologen.ru/wix?keyword=divinity+original+sin+2+epic+encounters+mod PDF link annotation
    • https://cdn.sqhk.co/bowevuva/gfgeyji/electrical_circuit_diagram_grade_6.pdfIn PDF document text
    • https://lifezudo.weebly.com/uploads/1/3/0/7/130739479/ca413528.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/f0kOquH/coffee_cake_recipe_using_cake_mix_and_pudding.pdfIn PDF document text
    • https://cdn.sqhk.co/jukusenefow/xA559hg/widuzusutagurolijis.pdfIn PDF document text
    • https://cdn.sqhk.co/gixezovof/mWNjdha/guratutefoxikuvepogam.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/y0jhijT/67496510115.pdfIn PDF document text
    • https://cdn.sqhk.co/nesadatifu/jcgche4/dream_farm_harvest_moon_mod_apk_android_1.pdfIn PDF document text
    • http://idealicaitaly.site/hakikat_metode_pendidikan_islamd26gk.pdfIn PDF document text
    • https://rigugoxa.weebly.com/uploads/1/3/0/7/130776225/1612432.pdfIn PDF document text
    • http://moviesaddaa.online/jifijuxobalexufanabakassiz63.pdfIn PDF document text
    • https://cdn.sqhk.co/vabadoma/hj7jdhj/digital_marketing_salary_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tugafebip/aruba_clearpass_onguard_deployment_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/vehicle_dynamics_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/45316277358.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/check_mark_icon_free.pdfIn PDF document text
    • http://tasijojaludet.rf.gd/blurryface_live_dropbox.pdfIn PDF document text
    • http://wafogaz.rf.gd/59585603710.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/tango_la_cumparsita_piano_sheet_music.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_off0000f471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF471 5688 bytes
SHA-256: 85700ed606a8a13cd31db8af36cb167ea3144ec6661cb8330e842ec23ae1b1e1
font_01_sfnt_off000107d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D2 10516 bytes
SHA-256: 90537e9d8255e6c48ac32aa24ab52fb299b09d658ba9a8b034cb55d00eecd896

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