Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c1648f4cb22b4d1…

MALICIOUS

PDF

55.1 KB Created: 2020-08-29 23:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f29ca572584be2302236fcb60cd7af1 SHA-1: c2b7c7c9b71425348095c0ddf8983b8c742ce226 SHA-256: 4c1648f4cb22b4d12759d7e330fa9790706132f0f87c22dd8dccde44b7e9a86c
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised with a keyword related to 'grim dawn armor piercing'. This suggests a phishing or scam attempt to redirect the user to malicious content. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to increase visibility of the malicious 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/wix?keyword=grim+dawn+armor+piercing
    • https://cdn.shopify.com/s/files/1/0450/9748/4451/files/cheeni_kum_320kbps_songs.pdf
    • https://cdn.shopify.com/s/files/1/0428/8380/9439/files/mapeva.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7466/files/85504786586.pdf
    • https://static.usrfiles.com/ugd/314c35_6d0306c04aac4492b99723f9f659162f.pdf
    • https://cdn.shopify.com/s/files/1/0437/4052/8792/files/idle_hacker_hacked.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3760/files/ares_descargar_musica_mp3_gratis_sin.pdf
    • https://cdn.shopify.com/s/files/1/0436/0008/5160/files/pugozeletatuligofimuzivi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3735/1323/files/27351545214.pdf
    • https://cdn.shopify.com/s/files/1/0450/2405/1358/files/rope_rescue_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/breville_bread_maker_recipe_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/bojuxakuponap.pdf
    • https://cdn.shopify.com/s/files/1/0437/7490/2430/files/kupinomepogadajukinuk.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_off00009ae7.bin
ef5cdb9df5e01a262d10fda1ed038900a9d5aa27c06a8c48cc2e86546be90012		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE7 5308 bytes
font_01_sfnt_off0000acf1.bin
2738558616f1fc9eca37ee3388148c9e4d33f0ea14a4fad100815327906c4e65		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACF1 10244 bytes

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