Malicious PDF — malware analysis report

Static analysis result for SHA-256 86ec514fdb611070…

MALICIOUS

PDF

85.0 KB Created: 2021-03-04 17:46:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: da3cc162b87510f1c9d48b8fee3655cb SHA-1: d78586ea68daf7a072e74a6ec8aef5d5a1136383 SHA-256: 86ec514fdb611070dd3a7a70fa3c980e12b9d235d4a1c803c8d1e3896f8b2c2d
126 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. The document body, though heavily obfuscated, contains text related to 'data science entry level salary canada', likely a lure to encourage users to interact with the document. The PDF contains numerous external URIs, including one pointing to 'https://gimoguvi.ru/strik?utm_term=data+science+entry+level+salary+canada', which is part of a link farm designed to host many other PDF files, suggesting a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://gimoguvi.ru/strik?utm_term=data+science+entry+level+salary+canada PDF link annotation
    • https://cdn.sqhk.co/xovepejegosi/hesBgdj/slap_kings_how_to_play.pdfIn PDF document text
    • https://cdn.sqhk.co/jiwonukunav/i0u6GGF/sasifikikavib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424996/normal_602cda8cc1a60.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443608/normal_5ffd99644fa7b.pdfIn PDF document text
    • http://realnoe-obshenie.online/how_to_use_micro_needle_peny4k1f.pdfIn PDF document text
    • http://arthromedro.xyz/bamisafop5fq9.pdfIn PDF document text
    • https://cdn.sqhk.co/zavilisuga/gdTJAia/75026671633.pdfIn PDF document text
    • http://tujijamutibe.sportsontheweb.net/76022055678.pdfIn PDF document text
    • https://cdn.sqhk.co/wolanojijen/gc8lacw/wikuduwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462368/normal_5fd9743e7cc62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486535/normal_604036066d2f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406166/normal_601917a92636e.pdfIn PDF document text
    • https://cdn.sqhk.co/rubogomuweme/9gcFXdl/water_parks_in_ohio_with_hotels.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420905/normal_5fe2729d6b61a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408174/normal_6001f47f08334.pdfIn PDF document text
    • http://zakomuxoza.getenjoyment.net/70407913747.pdfIn PDF document text
    • https://cdn.sqhk.co/mumeriretepi/hck7Hgg/awesome_tanks_unblocked_games_77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449599/normal_600a5765c5fc0.pdfIn PDF document text
    • https://cdn.sqhk.co/bawevabob/PjgOPhg/alien_swarm_reactive_drop_ps4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489713/normal_5fe76b995c0aa.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/hcyigoG/bedebatovosipekomasunolov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490141/normal_601889240e569.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/supakonukinukewase.pdfIn PDF document text
    • http://winoraama.fun/kawivukurinwod7m.pdfIn PDF document text
    • https://cdn.sqhk.co/xalibolopov/rB9Zagc/linear_equations_worksheets_grade_8.pdfIn PDF document text
    • http://bristol-yalta.run/running_lean_carmdosy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kubowulurarekij.myartsonline.com/why_is_my_subs_not_working.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_off0001106e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1106E 5096 bytes
SHA-256: 5c750480b62f2b2e3d3d68438a79864e926a95161954da245f7c55dd845120be
font_01_sfnt_off000121e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121E1 10656 bytes
SHA-256: 341c0c898c2fdf92b8816e8f84b67d1a45223bab498ffd32b3052048deb62a82