Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5d32e93c494c8e…

MALICIOUS

PDF

80.4 KB Created: 2021-03-28 05:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5e3636fa3156e25a9f9107a8373ec2f SHA-1: b2e1142119016c2d86fe5c7af0afe31e9d3bf16d SHA-256: 8a5d32e93c494c8e155c980f1796e6d10d1c06e7b91c72e4c79980bef656f5ac
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. While no scripts were explicitly extracted, the nature of the detection and the embedded URI suggest an attempt to trick the user into visiting a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/award?keyword=contiki+os+pdf
    • https://cdn-cms.f-static.net/uploads/4379032/normal_601eee14ddae4.pdf
    • https://cdn-cms.f-static.net/uploads/4489732/normal_600b6b2f7396c.pdf
    • https://static.s123-cdn-static.com/uploads/4417656/normal_5ff0d1978389f.pdf
    • http://katopikinu.22web.org/xididipomugujufisosogam.pdf
    • http://voxamuzovo.22web.org/98897164470.pdf
    • https://cdn-cms.f-static.net/uploads/4464297/normal_6024a8656e946.pdf
    • https://cdn-cms.f-static.net/uploads/4486215/normal_6059c5ece5034.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8180c13b-b942-494e-8e2b-41cd55dfbf9d/does_verizon_fios_have_a_football_package.pdf
    • https://uploads.strikinglycdn.com/files/05d24f23-38eb-4386-a723-df27e06ad158/joxejusedopa.pdf
    • https://cdfb6f36-dde2-4af5-b3b7-55ff39976061.filesusr.com/ugd/c6ac46_e049a1a6e1504ddc9fd99fa4a480a780.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7b2ef23d-60ab-444d-a3f7-230f76e57f11/60046079828.pdf
    • http://nawexox.epizy.com/clarinet_music_sheet_easy.pdf
    • https://57933e30-1e86-4cbe-ad2b-777cb72f9932.filesusr.com/ugd/235f1a_d41e40c422364ac7959450590d5afdbe.pdf?index=true
    • https://409b2d23-5c1d-402e-97df-26c0da9299b0.filesusr.com/ugd/2e3d42_c225575f11644363947d239bba052984.pdf?index=true
    • https://0a497e50-07dd-462d-832d-d8678f741a8e.filesusr.com/ugd/5f857b_33d333e54d504ff09c80fb348ebca7dc.pdf?index=true
    • https://d064ede3-316f-4d13-8ec5-014b2136b3bd.filesusr.com/ugd/154db6_a15915c9a57844cfa78b83c26c1eeffb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/85aadf81-bcc2-4b26-a509-5daa818a61cd/revamowaxutadepi.pdf
    • https://204833c8-abda-4421-8777-5048ee7dd919.filesusr.com/ugd/e30b7a_b7cd8fe863cb4eb7ad76a06cad17e4a0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/65db5e86-9e25-4cd5-ab81-774644e7e044/is_ddp_yoga_good.pdf
    • https://20e8ec16-a7ca-487e-906f-4b2d5c2744e2.filesusr.com/ugd/ab81b8_cc4c0520334f41bb9a3bcf5259a44d69.pdf?index=true
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_6a0a94b8e0984c52911cae672e49cfdb.pdf?index=true
    • https://51da6a7d-ee05-4a49-87ee-1b74af3aeb07.filesusr.com/ugd/b80405_f463838502544156882dd3b32f08a7f2.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffac.bin
98bc92c4a7a4cb4dd538a908b63cfe80eb4d2b87a0bfadf3f0e129ccabd4ef4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAC 4668 bytes
font_01_sfnt_off00010fa3.bin
51125e02b034f2beccdb1844b9363cf04b3636accf89fdb3178b672fb88f14c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA3 10908 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.