Malicious PDF — malware analysis report

Static analysis result for SHA-256 8039fbc219ec988c…

MALICIOUS

PDF

80.7 KB Created: 2021-01-08 12:04:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c2351ee2fc3cf38bf6b96e640fc1c418 SHA-1: 6ce8f7ba3dd72cd89018a293a827068e0daa98ae SHA-256: 8039fbc219ec988c286852c803577ccfe7dc2603977682b1a4689983312bee91
154 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. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=chain+igniter+coil+wow In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/mezevoxinokimuwamibu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380859/normal_5fe59193531f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5f8cbd32429f4.pdfIn PDF document text
    • https://rofewonopanofav.weebly.com/uploads/1/3/5/3/135312507/262359f02f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383460/normal_5ff5b78b5b25b.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/6ededc55f8.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/fadedosi/foot_locker_shoes_men.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/837e2a6d-0db7-4c7e-a125-ae3f3dc2c419/55097740553.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/99985733192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2d609c7-a0ce-410b-9285-d330e883af44/lesirudetilapitenizap.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/kuvijolisaxabikaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ce8d64f-c3b5-49d1-8469-49698b266b3f/kidoninafududa.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_off0000ffbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBE 4880 bytes
SHA-256: cf07d942f6a36dc57ff92316a65a11052a4f2b6b04a99e229d60229e440f4ce5
font_01_sfnt_off00011060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11060 11168 bytes
SHA-256: cc5020776011e35e2a48a9457d292e0071cf6ff05be3cd6f5817900f9728ed7f