Malicious PDF — malware analysis report

Static analysis result for SHA-256 999b81f4fd1988b3…

MALICIOUS

PDF

79.0 KB Created: 2021-02-15 06:44:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00cfd9545a2e108baf8563257537fea0 SHA-1: ecb2cb10f607558d51030d4fa20c947b424905f4 SHA-256: 999b81f4fd1988b36fa7aab73c3b9988f477da8a8e96697d388f98cc0ce946bd
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially corrupted, contains keywords related to 'Mortal Kombat X hack apk', suggesting a lure to trick users into downloading potentially harmful software. The presence of numerous embedded URLs, including one pointing to 'bologen.ru', further supports the hypothesis that this document is designed to redirect users to malicious sites for downloading malware or engaging in phishing activities.

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=mortal+kombat+x+hack+apk+android+1
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/827122.pdf
    • https://liruviwogaralo.weebly.com/uploads/1/3/0/7/130776788/kuditejiwodozuvexa.pdf
    • https://cdn.sqhk.co/tuseliwi/YDRgdgg/58961324433.pdf
    • https://xevekefipozi.weebly.com/uploads/1/3/1/4/131406281/6417171.pdf
    • http://gefejisu.22web.org/dinesh_chemistry_class_9_free.pdf
    • https://cdn.sqhk.co/gusiloxi/ihfghgf/50457835224.pdf
    • https://wotutokope.weebly.com/uploads/1/3/5/3/135315373/tofirafavazon.pdf
    • https://nubeboganiroj.weebly.com/uploads/1/3/1/3/131384383/e2f785e7b.pdf
    • https://vafebukuwu.weebly.com/uploads/1/3/1/1/131163563/1e62cafbff1c.pdf
    • https://biwaxosele.weebly.com/uploads/1/3/1/4/131437294/bobuxivozevas.pdf
    • https://static.s123-cdn-static.com/uploads/4367947/normal_5fdf735f61474.pdf
    • http://narosisebono.22web.org/igneous_rock_crossword_puzzle_answers.pdf
    • https://boseveju.weebly.com/uploads/1/3/4/5/134595203/4737536.pdf
    • https://fowerorizer.weebly.com/uploads/1/3/1/8/131856705/b19f4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dezoruxeg.epizy.com/gadik.pdf
    • http://vipodozuwuwo.epizy.com/25003491270.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_off0000f962.bin
2409face825ab18a911c69814a3efd770eee60cc9396e1f0bd221f6c866f9084
pdf-font-stream PDF embedded font (sfnt) at offset 0xF962 5464 bytes
font_01_sfnt_off00010bd4.bin
de93e47d247eae95e894ded2164debf1e5def4d099b4c14c35343086000a5308
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD4 10184 bytes