Malicious PDF — malware analysis report

Static analysis result for SHA-256 19009133cd743216…

MALICIOUS

PDF

77.0 KB Created: 2021-02-28 05:55:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7fb9093006280ef79bf38ef386ea336f SHA-1: 5e4955771d0e3d041d2d9e9df0db897d5cfc4c25 SHA-256: 19009133cd743216324c9bbc10292828f26468b944c611ecfd913a2848eaa8d9
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text that appears to be a lure for game-related content, directing users to a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://dugedepap.ru/wix?keyword=primus+5e+stat+block PDF link annotation
    • https://cdn.sqhk.co/takodabu/bgjXigN/kurabimudedozizute.pdfIn PDF document text
    • http://jawixogu.mygamesonline.org/deresomoxu.pdfIn PDF document text
    • http://zefujixa.mywebcommunity.org/loxejurusamebes.pdfIn PDF document text
    • http://autocredit.moscow/surah_al_kahf_in_englishrp6gb.pdfIn PDF document text
    • https://cdn.sqhk.co/sarimotel/igijcjh/zowudevuwanizid.pdfIn PDF document text
    • https://cdn.sqhk.co/badilapo/mLFXheT/car_x_highway_racing_mod_apk_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/JGjjn8s/15283671941.pdfIn PDF document text
    • http://rosutob.getenjoyment.net/finnegans_wake_song.pdfIn PDF document text
    • http://wersita.fun/90998175112yavlu.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/ejhjgfA/big_city_life_simulator_apk_mod_revdl.pdfIn PDF document text
    • http://esagafow.fun/94018420781rh8cc.pdfIn PDF document text
    • http://gajonedorebuko.mywebcommunity.org/gizixakitofuda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilowovuv.atwebpages.com/understanding_media_the_medium_is_the_message.pdfIn PDF document text
    • http://gudenojotu.epizy.com/airnet_ii_510_manual.pdfIn PDF document text
    • http://fatafebegit.epizy.com/giporetusapikutuxaxa.pdfIn PDF document text
    • http://sowinoto.epizy.com/68563929879.pdfIn PDF document text
    • http://sovezogodum.rf.gd/backuptrans_android_iphone_whatsapp_transfer_app.pdfIn PDF document text
    • http://losaxoxajav.epizy.com/gonudalufejifewifel.pdfIn PDF document text
    • http://zijiwaras.onlinewebshop.net/texas_cdl_training_handbook.pdfIn PDF document text
    • http://futuwerelak.epizy.com/bible_niv_1984_free.pdfIn PDF document text
    • http://tuxesoguzegisox.epizy.com/website_templates_design_free.pdfIn PDF document text
    • http://worurekebisur.rf.gd/lagu_ampar_ampar_pisang_versi_remix.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF196 5272 bytes
SHA-256: 173d34740416d0c79bd5c3dded58d391320dd23233b27dbf928ca3bc7652b374
font_01_sfnt_off00010376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10376 10412 bytes
SHA-256: 726faa7371145726ae8ee1762fb68272be74c203119817c2f8a8733d0c7775ad

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