Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d06039c2e038e8…

MALICIOUS

PDF

74.0 KB Created: 2021-03-21 10:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 1a74f6bedf2b0b84378011f9997668c7 SHA-1: 90360054464c15378cef0ff04fd9d2315069f7b4 SHA-256: 69d06039c2e038e8306ff3ee1b5dc5d1d4e0abf05fced5d5350334a64fb63920
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a significant number of external links, many hosted on disposable domains, characteristic of a link farm or phishing operation. The presence of 'utm_term' parameters suggests tracking or redirection, further supporting a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://lozipotod.ru/strik?utm_term=william+faulkner+quotes PDF link annotation
    • https://cdn.sqhk.co/widobixi/6aPjhKN/nicki_minaj_all_things_go_video.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/85CW626/bug_smasher_nitro_type.pdfIn PDF document text
    • https://daxuwapeva.weebly.com/uploads/1/3/5/9/135969289/652d52693c72a.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/iihbEje/vitugikekorezuxagugejakip.pdfIn PDF document text
    • https://sosepokapebovi.weebly.com/uploads/1/3/0/8/130814645/3e075e7.pdfIn PDF document text
    • https://dudosixe.weebly.com/uploads/1/3/4/3/134323580/zimofuwesi.pdfIn PDF document text
    • https://mujolimu.weebly.com/uploads/1/3/4/8/134868529/tukituw-tivotumep-pafokerixe-fisutapovudib.pdfIn PDF document text
    • https://pogeruriwijo.weebly.com/uploads/1/3/4/3/134340707/resoxonibuxod.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/ge8hgid/national_championship_football_history_scores.pdfIn PDF document text
    • https://fojefutitamok.weebly.com/uploads/1/3/3/9/133989463/rolaboviwiten.pdfIn PDF document text
    • https://kojaxinepizoju.weebly.com/uploads/1/3/1/8/131856409/zemotiwo.pdfIn PDF document text
    • https://fetepidema.weebly.com/uploads/1/3/4/6/134684810/nutib.pdfIn PDF document text
    • https://cdn.sqhk.co/xajevedu/MAiahfi/download_crack_alien_shooter_2_conscription.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bezexus.rf.gd/46671055853.pdfIn PDF document text
    • http://bujepefu.epizy.com/17162585788.pdfIn PDF document text
    • http://mefadagisi.rf.gd/bus_games_2017.pdfIn PDF document text
    • http://lojajute.rf.gd/how_much_does_a_bowflex_xtl_cost.pdfIn PDF document text
    • http://gesovupa.epizy.com/atmosfera_terrestre.pdfIn PDF document text
    • http://zujexig.epizy.com/lagu_on_my_way_dj_koplo.pdfIn PDF document text
    • http://varoniwarovez.rf.gd/99216463520.pdfIn PDF document text
    • http://forilojemani.epizy.com/child_labour_meaning_concept_and_forms.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_off0000e55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55B 5116 bytes
SHA-256: 698d622bff72302d2a4e88f2e15954b4d3870e45e6762bf66e3de88cc5229399
font_01_sfnt_off0000f6c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C5 10664 bytes
SHA-256: d84c61708e8e1eb2fc1ede45bbaeaff16e49bb94d0a3378baa62a33cf1c2cbcc

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