Malicious PDF — malware analysis report

Static analysis result for SHA-256 86491ebd3425d480…

MALICIOUS

PDF

85.3 KB Created: 2021-02-22 11:44:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c750fc0f075f415de1ae746108c5185 SHA-1: 2b2b2249b1be4bab275d738c924b574efb370a24 SHA-256: 86491ebd3425d48071938ab5d5b193ac11e7d9de6f9333bc16865776e3399bf9
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, with a specific detection name indicating it's a phishing trojan. It contains an embedded URI pointing to a URL that appears to be related to game cheats, suggesting a social engineering lure. While no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used to redirect users or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=lords+mobile+cheats+2018
    • https://static.s123-cdn-static.com/uploads/4469350/normal_5ff6aadcd1327.pdf
    • https://cdn-cms.f-static.net/uploads/4378607/normal_602af73988c2b.pdf
    • https://static.s123-cdn-static.com/uploads/4384144/normal_5fc87a4a78840.pdf
    • https://cdn-cms.f-static.net/uploads/4500665/normal_5fd62c417f101.pdf
    • https://static.s123-cdn-static.com/uploads/4469641/normal_5fdebfc330eda.pdf
    • https://cdn-cms.f-static.net/uploads/4493209/normal_6012f357cfd67.pdf
    • https://static.s123-cdn-static.com/uploads/4485448/normal_600824652b9e8.pdf
    • https://cdn-cms.f-static.net/uploads/4496404/normal_602b5c5b1e055.pdf
    • https://static.s123-cdn-static.com/uploads/4444356/normal_5ff08cc822d6e.pdf
    • https://cdn-cms.f-static.net/uploads/4482880/normal_6032b427e5587.pdf
    • https://static.s123-cdn-static.com/uploads/4374520/normal_5fe0162dc89a4.pdf
    • https://static.s123-cdn-static.com/uploads/4460966/normal_5fcf62c7bb6db.pdf
    • https://cdn-cms.f-static.net/uploads/4473938/normal_60289896348a8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lovetijif/dashboard_theme_website_template.pdf
    • https://s3.amazonaws.com/kisagoz/scared_cat_meme_template.pdf
    • https://s3.amazonaws.com/sugosubexez/89890354649.pdf
    • https://s3.amazonaws.com/legapatatezisa/53312912546.pdf
    • https://s3.amazonaws.com/kalanejaxutilif/the_chipettes_single_ladies_song.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6ad.bin
16be9b8f4e4ae8cc8613d768a5f7d20f3b11717480de30fdcb7228f408958785
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AD 11476 bytes
font_01_sfnt_off00010cb1.bin
cc0f5e49d1cc3ac9ef289d3c618b3111af8d954f7c2dc5182d1e88e052f9e888
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB1 5780 bytes
font_02_sfnt_off0001202a.bin
6bbc6186e6f741749b1e74af01f3fb7b3382e1a4fb713a92f82ab3daa6f9285c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1202A 11504 bytes