Malicious PDF — malware analysis report

Static analysis result for SHA-256 934b451915873083…

MALICIOUS

PDF

40.2 KB Created: 2020-08-11 21:14:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 245eb7278af8eaacfb829b3d1185cf10 SHA-1: 097a4e94e28d5adbeb5ef879dec108a1dd39a53f SHA-256: 934b451915873083ce3d0bec27de23920f8d0966b7c1b3f01d5633fe2657d303
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The document body contains numerous URLs, with the primary one being a redirector to 'ttraff.ru', which is known for malicious activity. The presence of many embedded links suggests a social engineering attempt to lure users to external sites.

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.ru/pify?keyword=cengage+physics+bm+sharma+pdf
    • http://files.inspirefineartcenter.org/uploads/1/3/1/8/131871518/bf84b58fc.pdf
    • http://files.freeshawnali.com/uploads/1/3/1/0/131069781/rokomapizuj.pdf
    • http://files.rubyslipperfund.com/uploads/1/3/1/4/131453823/wagemivoxola.pdf
    • http://files.sirensongvilla.com/uploads/1/3/1/4/131453712/fufowofagumox_samene_riminazagenadi.pdf
    • http://wezini.cprspacecoast.com/uploads/1/3/1/3/131398020/dedevejuwuko_fapaferugixujif_wopogezaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0433/9079/5934/files/1728502750.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.pdf
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/jisawetofuziribifat.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9571/files/basic_life_support_file.pdf
    • https://cdn.shopify.com/s/files/1/0433/9499/0243/files/23021661490.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0784/files/cladogramas_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/pifatud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/93147999032.pdf
    • https://cdn.shopify.com/s/files/1/0435/5781/4431/files/water_cycle_diagram_with_explanation.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6853/files/rufawagudekemosibezelalok.pdf
    • https://cdn.shopify.com/s/files/1/0438/0481/9613/files/computer_full_form_file_download.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050ab.bin
4a3d3128640aa597013a86bba31ec691418ac7d2fc52722890057c397961da16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50AB 5400 bytes
font_01_sfnt_off000062cb.bin
437301fb01934e5fed282b81b259dd3f8fe8797f5fbd5e0044b22d59a00024e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62CB 10148 bytes
font_02_sfnt_off00008580.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8580 4324 bytes

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