Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3fdeedcf06950f4…

MALICIOUS

PDF

49.0 KB Created: 2020-08-09 21:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44d7953bee3fe8f811997b37d9e91ddf SHA-1: eb25ee7df3c29bd1310d7cdee0db9b53738b75cc SHA-256: f3fdeedcf06950f4141766e47d1e4d6abb0283ed3bc623c3855e6b715c37f8e8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=bro+code+barney+stinson+pdf+free'. This indicates a social engineering attempt to lure users to malicious infrastructure. The document also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content. 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.ru/pify?keyword=bro+code+barney+stinson+pdf+free
    • http://gepub.northburmachristianmission.org/uploads/1/3/1/6/131606490/bd71d3f3213f38.pdf
    • http://wukurumaj.keepcalmandreadon.org/uploads/1/3/1/3/131378776/753823.pdf
    • http://files.bg2gct.com/uploads/1/3/0/8/130814056/pitig-wimilev-kitolunalofu-nizejotepem.pdf
    • http://files.mail.byboukje.nl/uploads/1/3/0/7/130775199/wurat_wazup.pdf
    • http://kuralef.tristatemaxedoutwomenspac.org/uploads/1/3/1/0/131071157/bukumubejuwof-tevajumunan-fuwarerepofenev.pdf
    • https://cdn.shopify.com/s/files/1/0430/5390/8117/files/27850643965.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7248/files/32869955201.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1256/files/networks_an_introduction_newman.pdf
    • https://cdn.shopify.com/s/files/1/0431/2711/1841/files/pepajamik.pdf
    • https://cdn.shopify.com/s/files/1/0436/0863/7602/files/bijetuva.pdf
    • https://cdn.shopify.com/s/files/1/0437/4626/3201/files/pirexidofasal.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/68381224108.pdf
    • https://cdn.shopify.com/s/files/1/0451/1078/8261/files/using_multivariate_statistics_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/2228/4960/files/conceptual_chemistry_5th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/suvuvufapitojupedeje.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/fonilewukojube.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3990/files/lowes_cagan_crossing.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5715/files/39866162894.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/zegetegipiniwiki.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005def.bin
b20196de85d0a8bab456d154246e1b90494de6398df9f5f8537ffc391fb1c4f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEF 5196 bytes
font_01_sfnt_off00006f9c.bin
9770054f98c2a4c6ffdc01b4b2ec6e61acad2e470e76bb7535105d89fce99c5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9C 10276 bytes
font_02_sfnt_off000092e4.bin
531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92E4 16312 bytes
font_03_sfnt_off0000a86f.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA86F 4324 bytes

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