Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e5b48d93efbc74d…

MALICIOUS

PDF

81.0 KB Created: 2021-03-22 11:19:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2c7749d020219239bc6c10f37e16d03 SHA-1: 72dd5cbd2dfcec090f329651ccbe4dfa866dfc77 SHA-256: 6e5b48d93efbc74dca06a3ab4761f2041e9f0612c23cc87f81900bdff24e8334
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/wix?keyword=osrs+monkey+madness+low+level+guide
    • https://cdn-cms.f-static.net/uploads/4368991/normal_602d3aa990aeb.pdf
    • https://cdn-cms.f-static.net/uploads/4462376/normal_6014f4937eb18.pdf
    • https://cdn.sqhk.co/vemosoveveb/jxvWZFY/30_day_home_workout_plan_free.pdf
    • https://static.s123-cdn-static.com/uploads/4384028/normal_6008447b5a73a.pdf
    • https://cdn.sqhk.co/vozeseseber/fAjfSje/cbse_class_8_computer_syllabus_2019-_20.pdf
    • https://cdn-cms.f-static.net/uploads/4413467/normal_600bfcd954c4f.pdf
    • https://static.s123-cdn-static.com/uploads/4496404/normal_5fca297a88639.pdf
    • https://cdn-cms.f-static.net/uploads/4401982/normal_604cc4b6457a6.pdf
    • https://cdn-cms.f-static.net/uploads/4495526/normal_6026e8ffb034c.pdf
    • https://cdn.sqhk.co/dobopejig/fof0ghk/muxojilutipepov.pdf
    • https://static.s123-cdn-static.com/uploads/4387702/normal_600184419b404.pdf
    • https://cdn.sqhk.co/xefijumu/jgiakTV/college_preparatory_mathematics_precalculus_answers.pdf
    • https://cdn-cms.f-static.net/uploads/4470211/normal_604818c9ee460.pdf
    • https://static.s123-cdn-static.com/uploads/4368955/normal_5fca5cf9f03a8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gurafoga/aahatein_agnee_band_songs_free.pdf
    • https://uploads.strikinglycdn.com/files/5ea3c073-60ed-4566-ae3b-792b13329261/73627160779.pdf
    • https://uploads.strikinglycdn.com/files/5072865c-aa47-44c3-8b53-0cc11c18387c/10_day_green_smoothie_cleanse_recipes_day_1-10.pdf
    • https://s3.amazonaws.com/xirixepo/ginotovubam.pdf
    • https://uploads.strikinglycdn.com/files/f48c5c65-7985-4230-9a6f-a8f0e2d93e26/1840718835.pdf
    • https://s3.amazonaws.com/fomaralunex/arcsoft_collage_creator_1._0_free.pdf
    • https://s3.amazonaws.com/ginutu/lycanthrope_dota_2_guide.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_off0000fcfc.bin
9103041c2c4b9ac1d89b9b636e0b2e753827d52fe027753cad98813f988f33c5
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFC 5488 bytes
font_01_sfnt_off00010fb0.bin
6b4c3c15b4363847673b343b4e75d3ddc13e585d7b3bc32d22d6b3f5f6f3bc40
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB0 11560 bytes