Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f24601efbc2bf36…

MALICIOUS

PDF

42.7 KB Created: 2020-08-06 17:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98624dac1af65351bf2dc9d4a22f1f4d SHA-1: 5a1b0c465666d6e4f4c8f85ba01e0d7fe207cad4 SHA-256: 6f24601efbc2bf36c2b4da42b2971624c9794e0ae27515b0b3b27ac66c743147
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which are part of a link farm designed to direct users to external sites. One of these links, https://ttraff.com/wb?keyword=interactive%20addition%20worksheets, points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users into clicking malicious links, likely for phishing or malware distribution.

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.com/wb?keyword=interactive%20addition%20worksheets
    • http://files.printing-plant.com/uploads/1/3/0/8/130874678/jilej_mojufotov_telisa_fevemubawaxamej.pdf
    • http://files.vivastrangeboutique.com/uploads/1/3/1/8/131856317/b5b4276b.pdf
    • http://files.mannykrakowski.info/uploads/1/3/0/7/130739309/26ef0edfb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/moxinijoxes.pdf
    • https://cdn.shopify.com/s/files/1/0433/7991/6963/files/tosibenaxeleloxaxiloku.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/46951794493.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/97589159167.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/arduino_projects_with_code_and_circuit_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0440/6178/6262/files/airtel_dth_new_plans_2020_list_price.pdf
    • https://cdn.shopify.com/s/files/1/0435/2580/0087/files/tawopofojisakeb.pdf
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/belorota.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/may_bulliten_boards.pdf
    • https://cdn.shopify.com/s/files/1/0431/3464/8482/files/26079200338.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cc4.bin
2471d261cdb3a2f9f9bc1c25e674d3fcf63bb63fda658e74e4fbcdf8da61031c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC4 4936 bytes
font_01_sfnt_off00006d89.bin
9da3160677025e9d152639fac9bb8990b81c6b4a17cce2ee656aa2472788648e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D89 10056 bytes
font_02_sfnt_off00008fec.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEC 4324 bytes

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