Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1d2edf5662c846…

MALICIOUS

PDF

72.9 KB Created: 2020-12-18 10:21:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7156557f0775fab774b3096590dcf0f2 SHA-1: 9969dde90b896c340a4b4188dec7f6d9e16a48e5 SHA-256: dc1d2edf5662c84668635f47e0126fb7ab75141ba762843e8b4889a4a45835ae
124 Risk Score
Tags
free-cdn-ebook-manual-lure

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. It uses a callback-phone (TOAD) lure. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • 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://trafficel.ru/123?utm_term=nisqually+jail+roster+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5fad909b1856e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385869/normal_5fcef280210a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402936/normal_5fb331e130361.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470209/normal_5fc4e8017f6f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482418/normal_5fbe75bd25b37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411709/normal_5fbbc98178b4f.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/1e0d552f-96d8-4f35-8d92-b6360bcb24f4/replace_piston_ring_2000_honda_accor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/050dbd98-6975-4da7-b06d-bf2f38b70fa3/mitsubishi_mr_slim_wireless_remote_controller_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/abcd_2019_movie_songs_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/motion_graphs_kinematics_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b4869b2-3de1-47a5-8b16-db8d3e488c7d/91298255384.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/42670089757.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/vasazuzafogezofuda.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_off0000de3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3C 4952 bytes
SHA-256: a4533ccb95659b91f8637b804dc5cf4324ec246b3440e810115603f4ea793313
font_01_sfnt_off0000ef35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF35 11716 bytes
SHA-256: b4d13025fcefecc13341cd4bb3e47829446ba0cf9edb0ff199754709cf824e23

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