Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb3ee76c82db4ea…

MALICIOUS

PDF

183.8 KB Created: 2021-05-02 17:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 438548ed278f3b00ff7ef003875206fe SHA-1: 3e720a76b5f905b82bb243591f3d03a5267775d1 SHA-256: feb3ee76c82db4ea25eaedebc2fc255f82eef3af085f4da8a4cd4cf1406098c1
166 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of an advance-fee scam, presenting a lure related to lotteries or prizes that requires payment for delivery. The presence of multiple external URIs, including one pointing to `jumiwimov.ru`, suggests an attempt to redirect the user to malicious content or phishing pages. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://jumiwimov.ru/strik?utm_term=what+do+you+mean+by+scarcity+and+choice+in+economics PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465125/normal_5feffd5f021c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390664/normal_6056d640d5130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459163/normal_60665fdbd0cb3.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/jd4ihgg/15072156218.pdfIn PDF document text
    • https://cdn.sqhk.co/kozutani/vgdghig/xejafo.pdfIn PDF document text
    • http://wineninuxusafu.22web.org/cisco_4742hdc_mr_client_digital_hd_w_cisco_card.pdfIn PDF document text
    • https://cdn.sqhk.co/rikopekela/4e0Thhc/butter_slime_games_making_butter_slime.pdfIn PDF document text
    • https://cdn.sqhk.co/wusuzevomo/ggjgwgi/maximum_volume_booster.pdfIn PDF document text
    • https://cdn.sqhk.co/fewesiwe/d3kDr5D/51533678119.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/0jgXG7h/rts_programska_sema_cetvrtak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_6028fa2063b4a.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/uidHVhe/sadububinobagizajojalab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408009/normal_6020270f9f9b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389074/normal_5fc908f354767.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374696/normal_6008d03538709.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422879/normal_604ed0b8d541f.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/hRghje7/gudelukexosi.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/Uia3RSd/ted_cruz_supreme_court_statement.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425784/normal_601753558ff0c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://eee5dff6-7331-416e-acdf-593d0c386862.filesusr.com/ugd/21e9e0_56ae282affc44a71a88bb129ab1fab67.pdf?index=trueIn PDF document text
    • https://77bac38d-831a-46d6-8f22-d7743fcadc58.filesusr.com/ugd/5b9a87_e74ad20b18174498ae0d72050ad4b004.pdf?index=trueIn PDF document text
    • http://bupazutorudazeb.epizy.com/panduan_belajar_saham.pdfIn PDF document text
    • http://xuvaduw.epizy.com/zolupuxewimulun.pdfIn PDF document text
    • https://33fe1336-4051-433c-b691-b763732126dd.filesusr.com/ugd/6c8f37_f507655f0b9841c38ae991c291fb4eee.pdf?index=trueIn PDF document text
    • https://5057b38b-f250-4925-a5fd-2dbc054a2c1f.filesusr.com/ugd/25ee37_3477ac6aac3e460b87c288d38655ae76.pdf?index=trueIn 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_off00029747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29747 5400 bytes
SHA-256: 52e2e0af0242715f25dba29e3b70d6f4c64a9587d14bc8e3305438ec4b254b77
font_01_sfnt_off0002a989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A989 11652 bytes
SHA-256: f2813746b6e4edb365e499de47e5c9d97fda348b5c00c1d629ec64571c8ff4e3