Malicious PDF — malware analysis report

Static analysis result for SHA-256 3088f81d19b9048f…

MALICIOUS

PDF

76.5 KB Created: 2021-02-20 03:27:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 18b1146a761ca082b8eeb8d0c2a4985b SHA-1: c26ee0a0fefe08105ef40d1bd508445559953f40 SHA-256: 3088f81d19b9048fb9813973613214a8105275f97bc180188d3a9e2d037d348a
126 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or redirection mechanism. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate the primary function is to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/123?utm_term=technical+elements+of+film+production PDF link annotation
    • https://pajujetijawu.weebly.com/uploads/1/3/4/3/134334360/64993c5f2ac.pdfIn PDF document text
    • https://cdn.sqhk.co/rubekafux/hhbibIc/kozupejanigubenojagetage.pdfIn PDF document text
    • https://cdn.sqhk.co/pevukoza/ife7KER/screen_glitch_wallpaper_hd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530323/normal_5fc832a322ea0.pdfIn PDF document text
    • https://xidazujagavoza.weebly.com/uploads/1/3/1/4/131453269/kuvipogara-bufapijotona-fipegowaw.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/idXacly/vebunizom.pdfIn PDF document text
    • http://serdyukov.pro/business_operations_manager_description1eu6i.pdfIn PDF document text
    • http://slmit.space/58349436718rivl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457332/normal_6028b85743741.pdfIn PDF document text
    • http://douchehq.xyz/966599242857cjz4.pdfIn PDF document text
    • http://mail-autoscout24.net/best_scan_apps90spa.pdfIn PDF document text
    • https://cdn.sqhk.co/fipufose/hiev7ih/linear_function_formula_calculator.pdfIn PDF document text
    • https://siwukomeje.weebly.com/uploads/1/3/1/3/131383380/2a5c404b42d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426955/normal_600d787b62e0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385434/normal_5fd76e1cc5aa3.pdfIn PDF document text
    • https://kusuxifitumaka.weebly.com/uploads/1/3/4/5/134593182/vezipukaduj-gevago-pedokurimazi-pibijuxefolef.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/mosezavor/jigsaw_strategy_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/skype_filehippo_full_setup.pdfIn PDF document text
    • http://wasamatebupo.rf.gd/nufedixizo.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/singapore_international_arbitration_centre_rules.pdfIn PDF document text
    • http://milodip.epizy.com/90903939683.pdfIn PDF document text
    • http://nejetetivapane.epizy.com/vyond_video_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/south_africa_culture.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_off0000ef06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF06 5344 bytes
SHA-256: 729a17745732c18e8b7f43ea9f1affde708cdc406ed2bdd3518eb44dff45bdcf
font_01_sfnt_off00010109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10109 10540 bytes
SHA-256: d12069de35843b49b5138474efb0bec51b4dc80f9421fcadcfe85a70dca4be92

Open this report in the interactive analyzer, or submit your own file for analysis.