Malicious PDF — malware analysis report

Static analysis result for SHA-256 db3d3ae4ac621d45…

MALICIOUS

PDF

86.7 KB Created: 2021-03-12 05:58:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 11ee5da87d4d4504ed0bbdb57bfee1c5 SHA-1: 9195a973fff3881635cf175b4226dbe733073356 SHA-256: db3d3ae4ac621d45dc6ed7017ba961b6d6254963e66096972b704b86f5caff52
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a website disguised as a game guide, likely a phishing lure. Heuristics indicate it's a link farm on disposable hosting, and ClamAV detection confirms it as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be directing users to a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/wix?keyword=total+war+attila+western+roman+empire+legendary+guide PDF link annotation
    • https://cdn.sqhk.co/fapolokid/ifiiclg/taligojozaralez.pdfIn PDF document text
    • http://spainwow.pro/bmw_navigator_vi_review0lbsi.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/jhcjeQv/fitazazufoxewizejefigupa.pdfIn PDF document text
    • http://m-ryanaf.site/6030384996axfbm.pdfIn PDF document text
    • https://cdn.sqhk.co/lenufetimop/whahahd/22473087850.pdfIn PDF document text
    • https://bizotimugir.weebly.com/uploads/1/3/1/1/131164076/2093048.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/ia1icha/run_rabbit_run_100_results_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/ZgefVvC/56255465563.pdfIn PDF document text
    • http://likelid.xyz/87304436087vzh33.pdfIn PDF document text
    • http://savadaqwe.space/938736608995dkyl.pdfIn PDF document text
    • https://vofamebibefa.weebly.com/uploads/1/3/4/6/134694090/mazapeweja.pdfIn PDF document text
    • http://brumbum2.xyz/apple_music_app_apk4mkfv.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/960efcd9-6835-45a6-a596-9c3aa323bb14/95682296636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e4a4ad-976a-4d84-8a85-bdd25e0598c0/does_planet_fitness_have_trx.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/ruziburozibotuder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b209abf4-7f93-4ec4-b784-d3fe0b517a64/administracion_segura_de_medicamentos_enfermeria.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/57957761481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d4a3446-fc2e-4dd0-8072-79bb90e419d5/char_broil_performance_2_burner_tru_infrared_grill_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/bizzle_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/como_se_forma_el_enlace_metalico.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/22827528308.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_off0001162b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1162B 5424 bytes
SHA-256: 86dd72589039a5e116b6ab1dd16182a0f503a2d8a3c271b349ef728e82fa9193
font_01_sfnt_off0001289e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1289E 10500 bytes
SHA-256: bd10cf3fdbf32fa099dd8a9b2cba85dc792a36e33621dc12b8acca1981e61b2b

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