Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bfa08d22c8d8862…

MALICIOUS

PDF

44.8 KB Created: 2020-08-30 04:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12bfb7b804b4f133bec135e62d24d56e SHA-1: 1f823a75cd13910cd6f87bdbfd62e30e9b88b412 SHA-256: 5bfa08d22c8d8862c2ff2e5bab6bfb1d8f5c68d74cdea83321a3b1cc6f50ddc8
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one pointing to a known malicious redirector (ttraff.com). The document also includes a visual download button lure, suggesting an attempt to trick users into downloading further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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
  • 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.com/wix?keyword=telecharger+pilote+autocom+cdp++usb
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/5865/7430/files/mitral_valve_disease_in_dogs.pdf
    • https://cdn.shopify.com/s/files/1/0438/3653/9045/files/22208399629.pdf
    • https://cdn.shopify.com/s/files/1/0432/0857/3091/files/ielts_10_test_1_writing_task_1_model_answer.pdf
    • https://cdn.shopify.com/s/files/1/0431/3962/9218/files/ncc_c_certificate_exam_paper_2020.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c52407394504aaeba3a17284267aed0.pdf
    • https://static.usrfiles.com/ugd/b5aed9_f0a7da17876b4f89a9fae4872aa51f86.pdf
    • https://static.usrfiles.com/ugd/23e9be_6280b8f9043d4e5db626df25cb597cbf.pdf
    • https://static.usrfiles.com/ugd/90423f_e68a1392cb4348af807b46de4ff6c3ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_236f357a6a844886b6b9d1d0f9d061e1.pdf
    • https://cdn.shopify.com/s/files/1/0436/1093/1358/files/vacaciones_santillana_100_problemas.pdf
    • https://cdn.shopify.com/s/files/1/0431/7295/4269/files/1283195967.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/innisfree_sheet_mask.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/lusimibimolalukanotuzu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6896/2469/files/6797999659.pdf
    • https://static.usrfiles.com/ugd/b8c837_cac386c57616490880203ada5fb27431.pdf
    • https://static.usrfiles.com/ugd/b8c837_c44407b9b901460694c3080e5b5616a2.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_off000065e2.bin
dd7b109cefa53b7662713a9986713a7c2e5966be6a51c417e4c16058c95feeec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E2 5576 bytes
font_01_sfnt_off000078a7.bin
e3e9aa1a05bd2549a77c1a57b235c9e773aefc31d6372cbaa7c7d8ff9fdc697c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A7 14388 bytes

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