Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4f42b6ea657dded…

MALICIOUS

PDF

41.5 KB Created: 2020-08-07 08:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7268b64fab2c64855b0771642988b916 SHA-1: 8aa7b0e7af288eb53c8569b1d034e777a4e64031 SHA-256: f4f42b6ea657dded3970c32b5613b9b54dd617ee018f1c8dc0a6824eeb18519f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=abstract+reasoning+test+pdf+for+high+school'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into downloading further malicious content. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for malicious content. The primary malicious IOC is the ttraff.com redirector.

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=abstract+reasoning+test+pdf+for+high+school
    • http://files.sehasedona.org/uploads/1/3/1/3/131383754/rutapomotafav.pdf
    • http://files.mawuviosoutreachprogramme.org/uploads/1/3/2/6/132682745/4876382.pdf
    • http://files.perfectliarsclub.com/uploads/1/3/1/4/131483266/572195.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/64367647150.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/john_deere_l120_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/5009/9107/files/magisterium_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8771/4721/files/fodoni.pdf
    • https://cdn.shopify.com/s/files/1/0437/4704/9623/files/plant_cell_coloring_sheet_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/bangla_boi_file.pdf
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/minawububelewalugex.pdf
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/17249153299.pdf
    • https://cdn.shopify.com/s/files/1/0451/0393/9749/files/minecraft_mods_minecraft_1._5._2.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3825/files/san_bernardino_county_food_handlers_card.pdf
    • https://cdn.shopify.com/s/files/1/0436/3016/6176/files/39030093465.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/70685491418.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/mimowedolu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/86675480676.pdf
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/sosupujelikuzitorajon.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_off000063c8.bin
2fc725b6e61ed201fae97d6eb26ea3f3e4ef88ba56308f122aca4598105ea158
pdf-font-stream PDF embedded font (sfnt) at offset 0x63C8 5544 bytes
font_01_sfnt_off00007698.bin
f34c316a63515b2757026ac43ff3ad989fa8d164f14d506d689fbbc746d66b7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7698 10008 bytes