Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff24a74acfd3e460…

MALICIOUS

PDF

79.9 KB Created: 2021-03-18 22:56:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 478ecf29f35979b40b0135a21dac322d SHA-1: 1c6975e05c89618987a5d6df40d4df9317676c54 SHA-256: ff24a74acfd3e460c2c990be7b7cd7c8d9500304749cba15ad89d25d44a0c915
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document body references popular game titles and job opportunities, likely as a lure to disguise embedded malicious links. While no scripts were explicitly extracted, the presence of numerous external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggest the document is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/wix?keyword=call+of+duty+strike+team+apk+offline PDF link annotation
    • http://kozidozilujivox.getenjoyment.net/fedex_store_jobs_san_diego.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/QTDhibY/76037762626.pdfIn PDF document text
    • http://keysecret.ru/faravikinokvfphc.pdfIn PDF document text
    • http://com-servers.online/baahubali_telugu_hd_mp4_video_songs2vmev.pdfIn PDF document text
    • https://cdn.sqhk.co/luginuwi/pjaiajf/luxutelixewigunesexikeke.pdfIn PDF document text
    • https://cdn.sqhk.co/jinuminex/i7hgYDr/jozoba.pdfIn PDF document text
    • https://cdn.sqhk.co/devurekon/cBhdW5E/76338685710.pdfIn PDF document text
    • https://cdn.sqhk.co/dabebasavus/igsbheh/98580727018.pdfIn PDF document text
    • https://cdn.sqhk.co/gupikekarobo/ygifhhr/darumofufesa.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/tici2jg/43585520891.pdfIn PDF document text
    • http://shopyou.online/mass_effect_andromeda_annihilationzx5l0.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/6ifhejd/dewujuwapixepanenus.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/64040816604.pdfIn PDF document text
    • https://cdn.sqhk.co/tiluzegata/f5Ts8wv/61031578789.pdfIn PDF document text
    • https://cdn.sqhk.co/suxavawudomo/NRghyhj/wabonavuse.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/jhc4u0S/jobetowofe.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/c4Vvlj1/orange_games_netherlands.pdfIn PDF document text
    • http://e-devletturkiyeaidatsistemimgovtr.com/charge_induced_dipole_interactiont2da7.pdfIn PDF document text
    • http://copyright-help-report.com/13843684268etsjf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kedisijusa.onlinewebshop.net/88904653722.pdfIn PDF document text
    • http://gamelaluwer.myartsonline.com/pleural_effusion_analysis.pdfIn PDF document text
    • http://dibulazovila.rf.gd/cbr600rr_2004_service_manual.pdfIn PDF document text
    • http://fipuxogililego.epizy.com/50525899957.pdfIn PDF document text
    • http://jubadune.rf.gd/ginimo.pdfIn PDF document text
    • http://toguxekedufu.epizy.com/android_studio_tutorial_for_beginners_w3schools.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_off0000eb83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB83 5256 bytes
SHA-256: 4b360b049ff0862bb5b638f4e0c23d46783000281a3240d6797e89accf65fe32
font_01_sfnt_off0000fd5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5B 22204 bytes
SHA-256: a1c62ce61c547debe94c94ab89681cec87fe3aa1e90181165d071f27628d140e

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