Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f44ba1285a7445…

MALICIOUS

PDF

42.4 KB Created: 2020-08-10 17:23:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 571e474ac96a30ae1ff54b05f1a67dad SHA-1: e353b641978b15f9258f6f16795bfd5e09053148 SHA-256: 42f44ba1285a74455846df955f8ea1899556651ddf1cceadabdf3dfcae74e9c3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=low+back+pain+arthritis+uk+pdf', which is likely used to direct users to a malicious site. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF links, suggesting a lure to a malicious payload.

Heuristics 3

  • 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.
  • 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/pify?keyword=low+back+pain+arthritis+uk+pdf
    • http://files.creativerecyclingworks.com/uploads/1/3/1/0/131070212/bcd4c47.pdf
    • http://dodifi.fredaswarrington.com/uploads/1/3/1/4/131452977/xoguni.pdf
    • http://vobisifef.happymamahappybaby.us/uploads/1/3/0/7/130775422/727919c5df83.pdf
    • http://files.imaginesullivant.org/uploads/1/3/2/7/132710795/mikuwub.pdf
    • http://files.lifestylehealth12.com/uploads/1/3/1/6/131636988/a790bd70c.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/multiplying_polynomials_worksheet_algebra_2.pdf
    • https://cdn.shopify.com/s/files/1/0440/7204/2661/files/69421364407.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5503/files/how_to_copy_from_kindle_c.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/55347009907.pdf
    • https://cdn.shopify.com/s/files/1/0450/1346/7286/files/ode_to_autumn_poem_summary.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/11654748238.pdf
    • https://cdn.shopify.com/s/files/1/0433/9538/3461/files/muxufinisopubaliponudaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/reragijod.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/hot_rod_frame_plans.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/fafuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/magipatirimiliroseponux.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/tegetedazosuxukunupegagu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9105/9097/files/analog_and_digital_integrated_circuits_notes.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000682d.bin
4d309f0ddd0297db58b0cdacf07a51844ebf48a622e13d2c79136a13337fae0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x682D 5448 bytes
font_01_sfnt_off00007ab7.bin
5fc44f958e4de85234cad901c4600e6d9b51cd5aac8f493aba0a1f9690a004e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB7 9932 bytes