Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a681d2674a632b…

MALICIOUS

PDF

72.7 KB Created: 2021-01-12 15:55:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e3ddc4481066d039e1e426589ac7f436 SHA-1: 41e5183d8435d54b9b16a6ef5e9db092fd8168da SHA-256: d2a681d2674a632b06b5dbce1229b6b9c6e75d7278a574587ba021ddd5930000
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to reference "Maplestory M pet leveling guide", suggesting a social engineering lure.

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://traffnew.ru/aws?utm_term=maplestory+m+pet+leveling+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379859/normal_5f8ff96c337da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380380/normal_5fdc0c549d5bc.pdfIn PDF document text
    • https://site-1166710.mozfiles.com/files/1166710/use_automaton_in_a_simple_sentence.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451348/normal_5ff6604f855b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454984/normal_5fe52c2e7319c.pdfIn PDF document text
    • https://cdn.sqhk.co/wemojezuvegi/0Am1jhs/sirewuxubam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505820/normal_5fc6bdb08cd24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498376/normal_5fda7cb23e5ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5ff17f19b33d3.pdfIn PDF document text
    • https://cdn.sqhk.co/wifavizen/IxrhiXa/racecraft_build_and_race_mod.pdfIn PDF document text
    • https://site-1249995.mozfiles.com/files/1249995/41184949417.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/iYBalhi/jimumatunu.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/lgVgfic/90435827047.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sorogamat/apple_music_app_to_pc.pdfIn 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_off0000df40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF40 5448 bytes
SHA-256: f07c1684a95499e32ab421b98352ac75905d59cf5f75d62114a5051890534dbd
font_01_sfnt_off0000f1cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CC 10656 bytes
SHA-256: 4e9b7081215c5ce8e57ca5519dc31cb731880160b59b7ab05530fabeff21b6ab