Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abc596feab94e92…

MALICIOUS

PDF

70.6 KB Created: 2020-12-24 00:09:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cdadbfd70a9b827b9b875962b0a267d SHA-1: 1ce10a00de46ceddbab24bd143ce0fcfdd1efafe SHA-256: 3abc596feab94e92a55ca67673cca5849cfff3ea4024987512e261fdd340ac43
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, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'traffine.ru', which is likely a malicious domain used to host a phishing page or download further malware. The document body, though heavily obfuscated, contains references to 'washer method formula calculator', suggesting a lure to trick users into visiting the malicious URL.

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://traffine.ru/123?utm_term=washer+method+formula+calculator
    • https://cdn-cms.f-static.net/uploads/4408709/normal_5fa1778aca66b.pdf
    • https://cdn-cms.f-static.net/uploads/4484156/normal_5fd3dc75d60ea.pdf
    • https://cdn.sqhk.co/jibetovo/5ie4w0v/61125850251.pdf
    • https://cdn-cms.f-static.net/uploads/4417039/normal_5fb93c4493518.pdf
    • https://cdn-cms.f-static.net/uploads/4388818/normal_5f95242e8344a.pdf
    • https://cdn.sqhk.co/wezopexa/R6jftsD/burugizewaverivoposuk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/ff497d68-c7c8-4530-bb92-94918b6f44f2/tommy_emmanuel_those_who_wait_lyrics.pdf
    • https://uploads.strikinglycdn.com/files/4eec5ff3-bc53-4fe0-812e-869be7af662e/tuxutireneg.pdf
    • https://uploads.strikinglycdn.com/files/5f2c5f13-f15d-4a23-8e3d-72adaf1f48c3/break_it_down_again_lyrics.pdf
    • https://uploads.strikinglycdn.com/files/5641844f-721e-4421-9394-1f1774e8f6f5/funixesuvibavorazexis.pdf
    • https://uploads.strikinglycdn.com/files/6a46347c-d0d8-4819-8b2f-794d8199e031/nasty_goats_apk_mod.pdf
    • https://uploads.strikinglycdn.com/files/7c7018b1-51a0-473e-bed0-1ebbe06c9f6b/super_metroid_maridia_stuck.pdf
    • https://uploads.strikinglycdn.com/files/7f0096c0-5ce4-42d4-96b7-2794b11c6242/bukowimalupepuludonerir.pdf
    • https://uploads.strikinglycdn.com/files/c63e577b-bc9b-4fcc-bbd3-796b71de0742/xipat.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_off0000c6ca.bin
1f1337e221452723cd80f948e3da89a3ae48db6cf1ab420338aa30be988b422b
pdf-font-stream PDF embedded font (sfnt) at offset 0xC6CA 5004 bytes
font_01_sfnt_off0000d7d4.bin
27bc4594c817bbb2ec2db4e6e6b788444d19178157b49d1b6a135b970d9a931f
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D4 12332 bytes
font_02_sfnt_off0000ffbf.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBF 4324 bytes