Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0f62edfc4eb3cb1…

MALICIOUS

PDF

75.1 KB Created: 2021-03-19 04:43:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: decfc6532f0c2a593fcb5f02277606ab SHA-1: 800267597b272a8ead3a70fb62f75873d9e97e68 SHA-256: a0f62edfc4eb3cb1722bcfd37f5415d9fc1f9d684541535a895c040784a3d22b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://kuzutuzo.ru/wix?keyword=dungeon+boss+mod+apk+unlimited+gems+and+golds, suggests a lure for downloading modified game applications, a common phishing tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

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://kuzutuzo.ru/wix?keyword=dungeon+boss+mod+apk+unlimited+gems+and+golds
    • http://talemine.getenjoyment.net/sikojoged.pdf
    • http://ginisuna.iblogger.org/il_mulino_di_amleto_download.pdf
    • http://gulexamotapa.iblogger.org/zidaraxugakigodowenikej.pdf
    • https://cdn.sqhk.co/sovanoniwuva/hiJuNA8/30670740918.pdf
    • https://cdn.sqhk.co/leguzufaju/isjjjhL/world_adventures_orlando.pdf
    • https://cdn.sqhk.co/bukevexej/ggFgfhi/tamogetewepatamufafawi.pdf
    • https://cdn.sqhk.co/zutigaku/iegjTic/youtube_lullabies_for_babies_to_sleep.pdf
    • https://cdn.sqhk.co/jifegusewe/eijbgdn/sivazojibadan.pdf
    • https://cdn.sqhk.co/vimexuda/icXjagd/snowy_forest_wallpaper_iphone.pdf
    • http://nesadurem.22web.org/33051287561.pdf
    • http://pewekelexu.mygamesonline.org/character_traits_passage.pdf
    • https://cdn.sqhk.co/nivunufozub/iiibhcD/xutorewo.pdf
    • http://kedugobepuged.mywebcommunity.org/comparison_between_osi_and_tcp_ip_model_in_hindi.pdf
    • http://zunowugijose.22web.org/lunaf.pdf
    • https://cdn.sqhk.co/kadukugobug/j0gh0he/ladies_white_platform_sandals_uk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lozepis.epizy.com/19609784346.pdf
    • http://xojozefobulujox.epizy.com/mandatory_reporting_nsw.pdf
    • http://roxutudutupit.epizy.com/riwejaxu.pdf
    • http://dupikupujetilu.rf.gd/target_market_analysis_sample.pdf
    • http://majerowi.epizy.com/zilapexulekotemiramumi.pdf
    • http://movuzawizigevej.myartsonline.com/drawing_of_kitchen_tools_and_equipment.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_off0000e80c.bin
5653027b8f65faffc7a51a427fbb662c3bd776051ef5c7cef2c60eaabb7048ae
pdf-font-stream PDF embedded font (sfnt) at offset 0xE80C 5384 bytes
font_01_sfnt_off0000fa4d.bin
841aad388272b1bc5ef2c1ac9a75c6f9f1bc094994b5cb0cdbbf645bfbd14a2d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4D 10724 bytes