Malicious PDF — malware analysis report

Static analysis result for SHA-256 3579d8771c0479ce…

MALICIOUS

PDF

67.3 KB Created: 2020-11-20 13:46:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1fdc762cecc4f18058c864bae93abe60 SHA-1: 9745640f9d79ca606c10261cc788eb8ab1d8f26c SHA-256: 3579d8771c0479ce06c8207d24a557671303bbdcbc7241cb763eb9738805c901
96 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 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 0.9998

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://trafffe.ru/strik?utm_term=comptia+network+all-in-one+exam+guide+sixth+edition PDF link annotation
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/8ca522c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454966/normal_5fb70da995b4a.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/d2f1016926b4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/38d967f2-5974-488a-918c-701f18b730de/wabosazanu.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/fatubokizurefuji.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/91865898376.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/909001a1-ed50-4807-aa0c-4acf31e29626/50281344999.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f449125-0d70-4b5c-a0c0-cf0908b77166/kenuzixuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8756a5b-e2b3-4746-a49d-5d11ad54a380/9472829948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a1ec872-26ea-455f-8c60-f624e0b90f27/39692612304.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/did_mariah_carey_get_plastic_surgery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/664ae86d-ff8b-4727-adfa-e727c81dd455/bambai_4x4_imdb.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/33599553523.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/wepotimegiwux.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_off0000c7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7ED 5536 bytes
SHA-256: 6c999f541399a7a735c182f5453680ebffd55b352fb6e9b4d4f3634c2e3ab66a
font_01_sfnt_off0000daaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAF 11236 bytes
SHA-256: 899730ab71a50a18bde55d13e5e58dfdcaa22f89a2f21b68906e5b7f3305bc38