Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba57512802cd12d…

MALICIOUS

PDF

80.8 KB Created: 2021-05-07 15:02:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d62975465dc32194614754fd645d8c4a SHA-1: 73d41e71bbe0ed0cdb4b93474b59735aed226168 SHA-256: 4ba57512802cd12db8ca1dacc62d9a8cc6f4904c41ec613a8633f018fafd3743
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=how+does+supernatural+end
    • https://cdn.sqhk.co/zaborofisi/uigl2gg/zeridaregekelakarilegot.pdf
    • https://cdn.sqhk.co/lotidonita/hhrhekK/31493964535.pdf
    • https://cdn.sqhk.co/wuvevalor/1Whjmhg/covid_19_pandemic_end_astrology.pdf
    • https://cdn.sqhk.co/lesasafo/ghhi0jd/informacion_aymara_para_nios.pdf
    • http://all-gopro.com/xunaxuitcbu.pdf
    • https://cdn.sqhk.co/fizuborugas/1iiEDia/xuzularivojo.pdf
    • https://cdn.sqhk.co/kamavedes/mPVAzif/78312232128.pdf
    • http://gaydating.world/kenadawopakitulikeximogop7y7gp.pdf
    • https://cdn.sqhk.co/lexelinowe/wK8ibrh/43734657389.pdf
    • https://static.s123-cdn-static.com/uploads/4495264/normal_5fe19b6ab888d.pdf
    • https://cdn-cms.f-static.net/uploads/4502248/normal_5fd3777a0cbad.pdf
    • https://cdn.sqhk.co/pumafuki/ggirrEC/sunigisuxesewas.pdf
    • https://cdn.sqhk.co/jemitaso/bZBGg22/zurigakezomebelolin.pdf
    • http://yourdesk.website/jikuzeboditebosutrng96.pdf
    • https://static.s123-cdn-static.com/uploads/4383131/normal_5fdfd9f0a4441.pdf
    • http://fitnesspack.net/2499720385ql2l.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/205d200e-8694-47d0-a836-a89068e3ab8f/57921955966.pdf
    • https://uploads.strikinglycdn.com/files/88f8d639-de80-4ca9-a094-76ef559ce7f8/tales_from_the_neverending_story_the_gift_2001.pdf
    • https://uploads.strikinglycdn.com/files/ad390c21-e684-4e5e-8f59-62e89cd992b4/what_is_the_dimensions_of_a_football_field_in_meters.pdf
    • https://uploads.strikinglycdn.com/files/e7a96b26-4666-4405-81c3-9a287c6f0ae0/top_alkaline_foods_list.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_off0000fec6.bin
b8e4361085b5f44e53eccbe2124409378f7d5ac5dd70c8a93c788bfc0861b1f8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC6 5004 bytes
font_01_sfnt_off00010fe4.bin
0263d49adbf5b78a960a25b6b5abd4d9b15589d064826e6665aaf758bf2b0bcd
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE4 11268 bytes