Malicious PDF — malware analysis report

Static analysis result for SHA-256 af0c6bb00d6d9f5f…

MALICIOUS

PDF

84.2 KB Created: 2021-03-23 07:39:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d0bcf7bc9af2d0574676174808da8c4 SHA-1: ecf5e86d29311f63d4256c9006215387d80e4062 SHA-256: af0c6bb00d6d9f5f8eb8a1587e1609a86a23e1766f12d99f05355b35684879d6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a website disguised as a game. This URL is likely used to host or redirect to malicious content, as indicated by the ML classifier and ClamAV detection. The document body, though heavily obfuscated, contains text related to 'car driving simulator', reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/wix?keyword=car+driving+simulator+unblocked
    • https://tebizojejifijof.weebly.com/uploads/1/3/4/5/134589629/2598317.pdf
    • https://cdn-cms.f-static.net/uploads/4471719/normal_5fe702055c4eb.pdf
    • https://cdn.sqhk.co/wagomito/ig4heQo/bezajimovataxebinonefi.pdf
    • https://podetixado.weebly.com/uploads/1/3/0/7/130739559/f323b0802.pdf
    • https://kasezikibojeg.weebly.com/uploads/1/3/1/8/131871727/liwadusib_nebofoxodurux.pdf
    • http://nonuxuzelubit.22web.org/chapter_test_a_the_human_population.pdf
    • https://cdn-cms.f-static.net/uploads/4465277/normal_603285d940a3c.pdf
    • https://cdn-cms.f-static.net/uploads/4451027/normal_6015ca395f3a1.pdf
    • https://cdn.sqhk.co/ximirujusuxo/5idvibo/baforebajolu.pdf
    • https://torudedo.weebly.com/uploads/1/3/4/3/134352944/togusutun_medow_sesijefebu.pdf
    • https://cdn.sqhk.co/xenetomapum/jfjeZGl/flannelette_sheet_sets_king.pdf
    • https://ditiboxoteripu.weebly.com/uploads/1/3/4/7/134763901/1638871.pdf
    • https://cdn-cms.f-static.net/uploads/4463788/normal_6053be783d7d6.pdf
    • https://lizakefamejoxen.weebly.com/uploads/1/3/1/3/131384135/lisurumakolajep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://suzogoga.epizy.com/bangla_book_free_site.pdf
    • https://s3.amazonaws.com/fefurorobumi/taliren.pdf
    • http://vowefaxi.epizy.com/sibajesolu.pdf
    • https://s3.amazonaws.com/vibasujefir/20100251801.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f497.bin
03ea2a75e1865ee54a17e196fb6afa8a0a32193c896ddf7de05a2e2abd6e0c4e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF497 5428 bytes
font_01_sfnt_off00010704.bin
eefc8d21e4eda6c2b15313ef9c4a180619d2cbcd874cb1765576ea65509a9138
pdf-font-stream PDF embedded font (sfnt) at offset 0x10704 11496 bytes
font_02_sfnt_off00012ea1.bin
acd535f3e908b1f60b27db0692cd17477bdb5ac724d8846cec3f628bd6278784
pdf-font-stream PDF embedded font (sfnt) at offset 0x12EA1 16120 bytes