Malicious PDF — malware analysis report

Static analysis result for SHA-256 52bb309269efe401…

MALICIOUS

PDF

66.0 KB Created: 2020-11-16 22:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e47bb15075aba7171244dda5fcab46b3 SHA-1: 28a333d6b397917e67e29972bb3793d8717ef34d SHA-256: 52bb309269efe4017bde40ee9c3aa68b8bb7a72333ddf78a568f4801508ac144
154 Risk Score

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. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/strik?utm_term=samsonite+tsa002+lock+forgot+combination In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383567/normal_5f8f752645090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417207/normal_5fad456bb440d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409606/normal_5f975128ca307.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377112/normal_5fa20df656e1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f8b0d223faeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tadovu/99354408680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d6c9d30-e645-4ee0-bc35-a8c726dfc00f/lipuvove.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/44511569458.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38bb4cc3-38a8-4873-a4df-958d16ed402f/57653448964.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/dream_theater_members_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e971429-f48c-47f8-9d90-95ee1bdaad71/june_2018_sat_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/584183e0-16cb-4454-805e-6d0e13acaa44/mavibaduwo.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_off0000c589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC589 5784 bytes
SHA-256: f00a5f1c4f42cc1c25d5aec2395408c7dbe3d818a823fae0778b30c286c64348
font_01_sfnt_off0000d927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD927 9976 bytes
SHA-256: b56e9680cd8f15883d02b4cd660a2c1e72c24b454ba3a1ba9e9787d73108c215