Malicious PDF — malware analysis report

Static analysis result for SHA-256 a96541ab4c40f4b5…

MALICIOUS

PDF

72.8 KB Created: 2021-01-10 08:33:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8545067136e6aed03ab7d2ee76d096e9 SHA-1: 190d4aa5258dbc947eebae332cf9aed332bce7e0 SHA-256: a96541ab4c40f4b5563e8b7fdf6be8cc722877a82014dfb100fc9033080bef9d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that masquerades as a download for a game mod, which is a common lure for phishing or malware delivery. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a malicious site.

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://trafficel.ru/aws?utm_term=back+wars+mod+apk+android PDF link annotation
    • https://luwamagol.weebly.com/uploads/1/3/4/3/134375262/xarova-tafuvikebot.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/6RCl1DN/tiwuxusagixu.pdfIn PDF document text
    • https://cdn.sqhk.co/dalegoti/qhdhdp3/nasesefijodatuxik.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuwaxisiw/FFggicE/13723994689.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/4Z4jjjb/jofud.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/gjdihja/dexewusapipad.pdfIn PDF document text
    • https://cdn.sqhk.co/boketumejipa/cibpQwK/dogfighter_ww2_ps4_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/jemajujo/XUidhn8/dungeon_craft_tiles.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/feborobegibew/abb_bivector_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/79184564372.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/lojaverufuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/72630878475.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/vebegupoletetinopek.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/20232764231.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/spanish_bilingual_dictionary.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_off0000d7a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A4 5392 bytes
SHA-256: b367ed73b44bb9028d48f4a9cc027cd21b20eaf408ce3701cacae7efb6666c31
font_01_sfnt_off0000e9f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F9 15336 bytes
SHA-256: 4bb3a742fd295d52d579e25c10b301d978515279b1ab90ab7545699d1f057202

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