Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1f4c882575bad8…

MALICIOUS

PDF

87.1 KB Created: 2021-05-08 01:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06d3f78f9f2c76e9022a006c674b15fb SHA-1: 3668f03531e82f30f406f6b355edc34e2fe0dabc SHA-256: 0d1f4c882575bad8cb2bf1e2c55360b529e7dd5e103558da99d69d1e7ce297f3
96 Risk Score

Malware Insights

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

The sample is a PDF document that contains an embedded URI pointing to a suspicious URL, likely intended to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The presence of multiple embedded URLs further supports the phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/strik?utm_term=mini+displayport+to+dual-link+dvi+adapter+best+buy
    • https://cdn-cms.f-static.net/uploads/4450355/normal_604b1d08a1b8a.pdf
    • https://cdn-cms.f-static.net/uploads/4481836/normal_604b2de4e95db.pdf
    • https://cdn.sqhk.co/texekikevow/dVpiga6/98445122126.pdf
    • http://scandisvet.ru/whats_a_verb_past_tense5gph9.pdf
    • http://lotto-investclub.com/lelenufaletamadonapwkjt.pdf
    • https://static.s123-cdn-static.com/uploads/4410985/normal_5ff54e3ddf37e.pdf
    • https://cdn.sqhk.co/josurowelimu/fgiFXhf/photo_studio_near_me_cheap.pdf
    • http://tokio-2020.fun/wosomop93f81.pdf
    • https://cdn-cms.f-static.net/uploads/4471941/normal_601b5811546e7.pdf
    • https://cdn.sqhk.co/zulatobi/yHhc5ef/1001_puzzle_games_online_free.pdf
    • https://cdn-cms.f-static.net/uploads/4368500/normal_6036db7bc9df1.pdf
    • https://static.s123-cdn-static.com/uploads/4491432/normal_5fc969dfc0f3e.pdf
    • https://cdn.sqhk.co/zojixemem/eAejaLh/blue_book_value_vintage_cars.pdf
    • https://cdn.sqhk.co/joremeve/XgjK0YM/74283895111.pdf
    • http://moreprodukti.com/blackdecker_convection_toaster_oven_6_slice_stainless_steel_to3210ssdx1mw3.pdf
    • https://cdn.sqhk.co/mamevugixej/hfijVic/vulozobatozo.pdf
    • https://cdn.sqhk.co/wutalididow/aibuDUm/33898007611.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1fb018f1-72fb-42eb-90ff-4423b36ef827/83577605469.pdf
    • https://uploads.strikinglycdn.com/files/9e72ba78-4179-43aa-abb5-75fc3319d11e/dd_5e_boat_hp.pdf
    • https://uploads.strikinglycdn.com/files/7f758043-b30a-4b0b-9f54-d6896e0e2cab/what_to_eat_to_lose_belly_fat_in_2_weeks.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011114.bin
20626b132ef2c5f9a7ffc10945405eb5b4efa281c5bb2f3fe26d6a15f6f36be6
pdf-font-stream PDF embedded font (sfnt) at offset 0x11114 5356 bytes
font_01_sfnt_off00012372.bin
d19acc8990b1b35ca907c253d904db690d640b4e55c035c9b5b1fed9323f9824
pdf-font-stream PDF embedded font (sfnt) at offset 0x12372 12436 bytes