Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ac2946eb590997…

MALICIOUS

PDF

87.6 KB Created: 2021-03-08 18:02:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d7abcd000a533d50a2674fe077d3326b SHA-1: 440c05a79522fdccdb408c5c7e0fa972b414826f SHA-256: 59ac2946eb5909976c0375cabe99f9350e115f44bd2601113686bb4c11680462
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to disposable hosting and potentially malicious domains. Heuristics indicate a link farm designed for SEO manipulation or to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect users, aligning with phishing or malicious redirection tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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://golowaki.ru/wix?keyword=flounder+gigging+light+setup PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4385030/normal_5fef45d54674f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379612/normal_5fe3926b32815.pdfIn PDF document text
    • http://desokore.medianewsonline.com/what_are_the_5_yamas_and_niyamas.pdfIn PDF document text
    • https://mojiwisixireze.weebly.com/uploads/1/3/4/6/134615440/kiboxefuz.pdfIn PDF document text
    • https://salobomuxalevi.weebly.com/uploads/1/3/1/0/131070078/tutomurid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406514/normal_601ed04155e66.pdfIn PDF document text
    • http://rozewevojalel.sportsontheweb.net/how_do_you_charge_an_ezgo_golf_cart.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470681/normal_60340d3f63e5b.pdfIn PDF document text
    • http://zusagukitu.mywebcommunity.org/20486419867.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385415/normal_5fdda83a81d11.pdfIn PDF document text
    • https://makonajarozov.weebly.com/uploads/1/3/4/3/134341931/86c88db54a71bd.pdfIn PDF document text
    • http://xorimomupajo.scienceontheweb.net/why_did_batman_fight_superman_in_dark_knight_returns.pdfIn PDF document text
    • https://vuxupiwiruxip.weebly.com/uploads/1/3/0/9/130969000/popobupita.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/fbe64f04-5a16-4703-a791-2b0c3dd264e4/connect_goflex_home_directly_to_computer_via_ethernet.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/chale_aana_song_whatsapp_status_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/tunubevizexijajewukotap.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/25531974231.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9955e12-9bbd-4d45-a867-1c1604f63664/stanley_model_number_bc15bs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70144498-6ed0-4564-8053-bbd29bc18e3b/fenemu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa52495f-22f6-4c63-aa0f-2931da953838/how_do_i_restore_my_computer_using_command_prompt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/255e9817-5fcd-42a5-a394-8f1f2e9f7541/bibajagosubugizawekem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb0ee7ea-5acc-4136-bbd0-a0f16e393301/libejefugaribu.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/bluestacks_app_exe_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71240d1f-1de8-486a-86eb-10f88cf66d02/was_it_a_dream_guy_de_maupassant.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/star_trek_discovery_season_3_episode_13_release_date_uk.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_off00011aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AEB 4964 bytes
SHA-256: fdacc333f0ad81d47b1406b8d53f160fa121c606a076843c860d502872a86681
font_01_sfnt_off00012bcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BCF 10348 bytes
SHA-256: 9004192c2543615e326ac5124471f3a7b2c14ecefe19f0700ac795b46b521f81

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