Malicious PDF — malware analysis report

Static analysis result for SHA-256 00921f4af0bad178…

MALICIOUS

PDF

153.9 KB Created: 2020-11-20 08:10:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 634ed0f7e7b22dd86e59fac88199590b SHA-1: 1ecb6ac49c1d21987749fb288519056ff479e8ba SHA-256: 00921f4af0bad178a64f9ebfdfb2f5b0777b2d070f33268af14db5abdbb1b2a4
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains a malicious redirector link and was flagged by a machine learning classifier and ClamAV as malicious phishing content. The document body, though partially corrupted, suggests a lure related to a 'Buyer's requisition action required report' with an implied deadline, aligning with phishing tactics. The presence of a malicious redirector indicates an attempt to lead the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ggtraff.ru/aws?utm_term=buyer%2527+s+requisition+action+required+report
    • https://cdn-cms.f-static.net/uploads/4407749/normal_5f9c91234e49f.pdf
    • https://wigemixez.weebly.com/uploads/1/3/4/2/134265991/wotiteb_dosufubabura_bejububobawebu.pdf
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/xekad.pdf
    • https://gufevetiginuz.weebly.com/uploads/1/3/4/6/134626386/kepov_kabetaketuzop_xixudasovudemu_sejuletajuw.pdf
    • https://jowetetezuvam.weebly.com/uploads/1/3/4/7/134717416/8873593.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bulozor/video_bts_fake_love_live_bbma.pdf
    • https://s3.amazonaws.com/tapexiw/2281710246.pdf
    • https://s3.amazonaws.com/suzixegazunow/chugoku_japan_guide.pdf
    • https://uploads.strikinglycdn.com/files/c2c0209b-e8e9-4cbc-8742-591aa592bf7e/bed_bath_and_beyond_full_sheet_set.pdf
    • https://s3.amazonaws.com/fejenijovekozu/all_about_upsc_exam.pdf
    • https://uploads.strikinglycdn.com/files/e5a11936-bc15-4d4c-b481-df17fcd62ab6/96052120559.pdf
    • https://uploads.strikinglycdn.com/files/520cdfe5-5e7d-43d8-a26f-03ce845213ab/55365417843.pdf
    • https://s3.amazonaws.com/memul/17859225335.pdf
    • https://uploads.strikinglycdn.com/files/51f17d12-b1b6-41ea-9cd4-55016543263d/vizio_p502ui-b1e_stand.pdf
    • 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_off00021f47.bin
e71208f667468ee40d603b0f2614e90973d946b3eb081a9b66418f8f534d9b5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x21F47 5344 bytes
font_01_sfnt_off00023191.bin
3bea20ca70d4b44cc8fd103ba572bf4ad018a92e5eea425804390451c08b1b0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x23191 12964 bytes