Malicious PDF — malware analysis report

Static analysis result for SHA-256 114cd017566712e5…

MALICIOUS

PDF

72.2 KB Created: 2020-11-10 07:34:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 97fa9030ab1ca66923ed95c3b05bae81 SHA-1: 1d402ab4784679f0f7fa9b59cb988656c453083a SHA-256: 114cd017566712e54f50e3766fc44db5e9bcd1ec8446502fb283bd901b7f1fa4
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/aws?keyword=mice+and+men+study+guide+student+copy'. This URL is likely used to lure victims to a malicious site. The ML classifier also flagged this PDF with a high probability of being malicious. No scripts were extracted, but the presence of a malicious redirector strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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.
  • 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://traffking.ru/aws?keyword=mice+and+men+study+guide+student+copy In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387566/normal_5f945fa5248f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451212/normal_5fa1dd38897d8.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/d5856a78-f929-4bb8-9207-c2489977f9dc/mopolika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eda318b1-81e3-42d7-a324-ffa5d3ad87ef/windows_8_pro_32_bit_iso_download_wi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0678271b-6ea9-47cc-aee0-a1e6733218b7/canadian_bull_target.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/59260871582.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17a8c493-0e17-4d68-b14a-4e8bba6069d4/13034248931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59cdefb2-9d12-4bb9-9d64-fa6abb2e0beb/68508564546.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/gizawiselixelulojimudone.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_off0000de48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE48 5372 bytes
SHA-256: 832cc5bf2e3846b71eaf771f48e0031ed7662f9a6eeb245a277a44ee9b92706e
font_01_sfnt_off0000f09a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09A 10472 bytes
SHA-256: 9ad7c7cd10211c94e6453bd63a908f9a82bb7b95f584174d814d2e8bdded7ceb