Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ca8e4b421b16ca…

MALICIOUS

PDF

62.5 KB Created: 2020-11-19 08:55:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a751b58a194d67d4e4657b2f68be79d5 SHA-1: dc65866500b61b8015d61c0e30a274d4f7ef3e87 SHA-256: 12ca8e4b421b16cabcbb46351247ba2358f79914717ee7e2fccbdfa3c8990670
116 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a QR-code lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://trafffi.ru/123?utm_term=casio+fx-991ex+manual PDF link annotation
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/gezumuwavizegekis.pdfIn PDF document text
    • https://gumakamatiz.weebly.com/uploads/1/3/4/6/134600955/bolirowi-xizimijakodifu.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/9746686.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/tetazino/jolibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6c659ac-f725-46f1-be5a-b23d95c646db/watusuvaduruziko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e56b8b2b-b9e0-48a7-bcf2-3b7d34627d9c/87540436560.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38ab63bf-a9da-436e-b5bf-3d22a3f95ff4/58899730749.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/traditional_dances_in_france.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/asphalt_concrete_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efb75052-b777-46d8-a3d6-20250a6ba4ed/39453280348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fd3ac43-fa9a-44b0-b45a-a0cfd81801ca/download_the_amazing_spider_man_apk_revdl.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_off0000b88f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB88F 5032 bytes
SHA-256: d739de131c68e332a6a3d5d4c0fc3bd2c1855efe4f6169ecd1705e34ee14ad4f
font_01_sfnt_off0000c9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AD 10548 bytes
SHA-256: ef2d59b60a05b0b73031ccadc08f1b8bbd827e3315df8d8a57b019d55156f71f