Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aca147bb2111d16…

MALICIOUS

PDF

66.3 KB Created: 2020-12-17 03:41:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 59e5c693d1313389648d8d3ef188f366 SHA-1: 7233bfe56c016599dd17626c8ba683fd116451f5 SHA-256: 1aca147bb2111d1629ca3e8c13ada4f1ecb35186033d6a8c5cae45370257b145
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by both heuristics and ClamAV as malicious. The ML classifier also strongly flagged this PDF. While no scripts were explicitly extracted, the presence of an external URI suggests an attempt to redirect the user to a phishing or malware distribution 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://trafffe.ru/123?utm_term=eldorado+leather+manual+recliner PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c03618ab-16fd-42a6-acb0-6ccbad1bf5c5/22533235305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09e0cc23-465d-4e07-bfbd-85648adc2b02/96416319979.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a7c1868-1d66-4f12-8e7b-c018ee7e683c/6457820833.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe080af3de5e49b52b2d3b/1606289419404/nhac.vui.vn_ng_ca.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12a0327a199023ab7046e/t/5fc55715f3de5e49b5170a08/1606768405988/61058269859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4d3ad25-94e1-4a34-9c7c-690ff9095b05/56063413167.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc676cd1452f90b7f0b4806/t/5fc930954485294f68b13c44/1607020694191/harga_perpanjang_sim_c_2019_bandung.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/wazetibenazevalilif.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc584cb17e7202640095cc5/t/5fd2198ec10336458b3e4d72/1607604624562/cara_cheat_plant_vs_zombie_2_pc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc007c924b06a7eb3fa3bc3/t/5fc36757f8cdb769c64ec0f6/1606641503257/genewarazupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/455e0bb8-b176-4fc8-8970-b04b030018b7/computer_engineering_resume_objective.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86a40340-3cb5-4f33-8921-49db7431e746/red_onion_jam_for_burgers.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_off0000c66b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC66B 4956 bytes
SHA-256: 792f32cac8cd7e88575c70006c893f1b139a77689752f17a1e445e11d3c60ed5
font_01_sfnt_off0000d719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD719 11212 bytes
SHA-256: 82eec64964091cf59e68e87025e9ba10d7fd6c75da830e78b563a46aedfcbaa7

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