Malicious PDF — malware analysis report

Static analysis result for SHA-256 a08479cbd8a1fbd6…

MALICIOUS

PDF

45.4 KB Created: 2020-08-04 15:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80891331e3e3509b6980340025757a53 SHA-1: 4c24057301491c6664b00520bf8ef9a31fe24e87 SHA-256: a08479cbd8a1fbd6cbc8a7538a604d63a842f26fec3a1af6a838c51512540d4a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at `ttraff.com`. This suggests a link farm or SEO poisoning tactic designed to lure users to malicious content. The document body, though heavily obfuscated, contains the URL `https://ttraff.com/pify?keyword=borel+measurable+function+pdf`, reinforcing the malicious redirector finding. No scripts were extracted from this sample.

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=borel+measurable+function+pdf
    • http://files.terralumen.com/uploads/1/3/0/7/130739012/vowefov.pdf
    • http://gagufarog.boatandhobbies.com/uploads/1/3/1/0/131069839/db968.pdf
    • http://files.elginartist.com/uploads/1/3/1/6/131637606/jixiximozanubim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofusibosaduxigagixuvoma.pdf
    • https://cdn.shopify.com/s/files/1/0429/4151/3894/files/61959745641.pdf
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/79632573421.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/389628068.pdf
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/dragonballz_flash_games.pdf
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/vikitemekidudisivowugiwu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/xevixonebogevegusanuwodez.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/24149954007.pdf
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/29167278939.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2580/files/5900090518.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/piwutuzomabunapotexelol.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/94469993663.pdf
    • https://cdn.shopify.com/s/files/1/0434/2179/4460/files/57334540729.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058ba.bin
948ca49722797739d1414b454d4e4e33c5a8875a4f723454a2e557e9af44c4cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x58BA 5492 bytes
font_01_sfnt_off00006b44.bin
872f09885af6671d891f665c7befa82a65363ef695412aa8252609006ba2c05e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B44 12296 bytes
font_02_sfnt_off00009374.bin
f7f944af48a1f29a4fc81369acbb7667dc0c0bb312d09d0e658341ed730dbf86
pdf-font-stream PDF embedded font (sfnt) at offset 0x9374 16144 bytes