Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f6b941b29e5c7b…

MALICIOUS

PDF

47.4 KB Created: 2020-08-26 11:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9d91170476893fcb76f1984ff3340309 SHA-1: fb4762246145244dfd766c6b6679b2d794e68f93 SHA-256: 84f6b941b29e5c7b47faa1eeb560ddc58ef87fa49164e2057277aa82dcdeb61e
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body also contains the URL 'https://ttraff.link/pify?keyword=poe+culling+strike+support', suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.link/pify?keyword=poe+culling+strike+support In PDF document text
    • http://files.campidivolontariato.net/uploads/1/3/0/9/130969166/3419320.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/ipl_cricket_quiz_with_answers_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5050/8181/files/el_cambio_climatico_en_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/kegez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1093/1358/files/witubiginowowoxovajam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/law_cet_2019_application_form_last_date.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6487/7471/files/66717299091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/whistleblower_complaint_inspector_general_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5382/5704/files/20527244214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2809/3850/files/velatimawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3989/9304/files/loxenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/waxepotokirupur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53567737566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/95097297806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/90358266765.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_off000077d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D6 4956 bytes
SHA-256: 38b25b695a9fc41948c9d3d947a2b9b2c986ef55af4ce7dcba6fb715e51cf4a7
font_01_sfnt_off000088c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88C3 12544 bytes
SHA-256: bf36dceb04558f82e728c5afb0c1354c67aaa5fe1503cdca9afd162bc7370842

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