Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e75225c48001e1…

MALICIOUS

PDF

74.4 KB Created: 2020-12-01 23:54:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 974d93b2e4fdb217d156e7ecb4d62c2e SHA-1: b5ed6fbc565c5c6be07e2efa85ef0c1e4f0e7208 SHA-256: f5e75225c48001e144e26c21bee020d61781553019531be7b9e545fa3cd40392
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution T1553.005 Security Software Installation

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=ac+market+app+new+version+free'. Additionally, a high-severity heuristic indicates an instruction to disable security software, which is highly suspicious for a benign document. The ML classifier also flagged this PDF with a high probability of being malicious. These findings suggest the document is designed to trick the user into visiting a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=ac+market+app+new+version+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377704/normal_5f970cf8ed9ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5f967d7920950.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5f89d4eabb181.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc28a8460f2895dc1f24b3d/t/5fc6b7156beae454314cce87/1606858519126/63819455656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8e9aa8d-29e4-4bb5-b696-d57284bb8e77/were_the_millers_torrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2754c77-4557-42f0-bb92-383e1bbd7da4/98089683970.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe037df81c9a2a0c68e210/1606288253616/one_sample_t-test_in_r.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/tuwapakolatelikapisaf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27b6fdf132613bbc7a91a/t/5fc3c103f3de5e49b5d6dad9/1606664451493/dodorowopadepikagekevos.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/66031693211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc147ccc-e1f9-41f8-a5af-d3ee11a7aae1/puzovorofovojunewilizaja.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC2 5336 bytes
SHA-256: a9611d0a4953cf22932c6345aeb2efeaed2482d52909d408070b765d76a4aa36
font_01_sfnt_off0000eee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE4 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off0000f774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF774 10780 bytes
SHA-256: b22f279b6363fccfaa7ee4c3c023e019a320a4a449d1ed615476c54b1f24b655

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