Malicious PDF — malware analysis report

Static analysis result for SHA-256 775bb8d348237e56…

MALICIOUS

PDF

36.6 KB Created: 2020-08-05 15:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8313836410887fef9ca0240519283915 SHA-1: 0b29d487313ea1c59d06ea381df305903be066d9 SHA-256: 775bb8d348237e5610df7ccc78d81c4a65163436428f427cb965dfc16d419849
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many pointing to Shopify domains, suggesting an attempt at SEO poisoning or link farming. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=physical+science+p1+november+2020+memo+grade+11+pdf'. The document body, though heavily obfuscated, also contains this URL, indicating the primary intent is to redirect users to malicious infrastructure. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=physical+science+p1+november+2020+memo+grade+11+pdf
    • http://files.curbcompost.org/uploads/1/3/1/6/131606127/8100798.pdf
    • http://files.jurneyvetneuro.com/uploads/1/3/1/3/131383838/vifiwagiz_disesodubux.pdf
    • http://files.rachelpagesings.com/uploads/1/3/1/3/131398194/9f32379d8a309.pdf
    • http://files.oasisdogspa.com/uploads/1/3/0/9/130969993/1827afb1254bc1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/94370373421.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/49414895672.pdf
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/ralevuvokasowejonizoro.pdf
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/xigidedukafoxodigepi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2168/9254/files/55443603508.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/autonics_pr12_4dn.pdf
    • https://cdn.shopify.com/s/files/1/0448/4985/6669/files/emergency_banking_act_march_9_1933.pdf
    • https://cdn.shopify.com/s/files/1/0434/3532/7653/files/42850837173.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/cube_world_real_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4470/files/adb_list_installed_apps.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_off00004e11.bin
c27e02d3f04b7473c43f401e02271ad9fb7c4e76e3cf66e92984891c8c7aeef7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E11 6196 bytes
font_01_sfnt_off00006312.bin
f3573d0263211c180621c910119eccfd4ed58bfc3d5a47d421688120295e1f82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6312 9924 bytes

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