Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6a2556b6d7d16a…

MALICIOUS

PDF

70.8 KB Created: 2021-01-06 13:22:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c3a3b81563fb7e059a5804819ba9a77c SHA-1: 951e565b2d31797392d5302ebcb71410c2facd54 SHA-256: aa6a2556b6d7d16ae517d32fdf682fb214b6e65f2965c036cde4396f4e4f2f34
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, with a specific detection name indicating it's a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'buying guide'.

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://traffking.ru/aws?utm_term=hrv+buying+guide PDF link annotation
    • https://cdn.sqhk.co/fofodafexadu/gjbtamH/new_fall_guys_game_advice.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwapusumoge/gghazJW/lododugatot.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/teximikamukubo/putupovero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eba31d2-35a2-4e40-9091-0b6fc6c6793b/adobe_premiere_pro_crack_cs6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b23c125-c2f5-4f2e-a5c5-257e4d4785ef/kibubuzipegijanobon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f971f35-0397-4d6b-b1cb-3748fc3c60dc/sevamivonalidum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6be59a7c-b888-4359-b964-1e1efe543f51/gasejadedopefatozomi.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/conjunctions_worksheets_for_grade_5_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd1ea82d-a1fc-4e45-a220-ebc266b0012b/95956242144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac818784-8bc0-4d3e-9edd-c7ecd1970622/bufoganivoxuliba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/078ce3d9-5c40-4857-b0af-fd121f22760c/sufapolukeju.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/tamil_movie_hd_tamilrockers_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/nalajemijowep.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_off0000daf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF4 4836 bytes
SHA-256: 3893e4d3b953a93d47966476e1a49835505d1863e4f3e01dd1ffc6c9fe2c54f0
font_01_sfnt_off0000eb83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB83 10304 bytes
SHA-256: 2c42531b2d75bb10292ee4a11e950f91e5e67e7ebb238124ea31a12bcdff53f0