Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa9021c5c6f8204…

MALICIOUS

PDF

68.5 KB Created: 2020-11-19 16:06:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6014a063fdb27e473d5c6223f3812e3c SHA-1: df3f54d3e75bb3bf207f9d38674a4813421355e4 SHA-256: daa9021c5c6f8204a67e9e0ad64e9da7acfc77d3734612c1893a1ce2c336f195
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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. 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 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/strik?utm_term=devinimsel+%25C3%25B6ge+ne+demek PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f86f7776f3cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378379/normal_5fad60221443c.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/susonanezaj/mibekanozodexakazemula.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/suxategasojitozow.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/mizesexawowikoto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce41df84-f25a-4867-aced-0ada1e269a6d/series_convergence_tests_cheat_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9540313-2965-4b65-97ee-5b0490868f7e/gagetupikarolodoru.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/famanumovovidixinofogix.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/cement_composition.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/lajexozonim.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_off0000cfe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE7 5100 bytes
SHA-256: ea973b7812c1606da82cf618b44bdbbf2a00be7e3077aa1cd48ae658cc2fbf6a
font_01_sfnt_off0000e103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE103 11352 bytes
SHA-256: f6c0cece86d910dbf46a732504e3e56883e0207f66f0d62365305d2cc2a72eb3

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