Malicious PDF — malware analysis report

Static analysis result for SHA-256 206b13d1e4dbee16…

MALICIOUS

PDF

46.2 KB Created: 2020-08-18 21:05:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 404f38326e2cbbcac49de367e60ab3ea SHA-1: 27e9e529cd31fa089ceb573dcdde32b657c0286d SHA-256: 206b13d1e4dbee1666867eb7f75ab4a05fa17db3d02f3705657bd95a54d9962a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic identifying one link pointing to a known malicious redirector at 'ttraff.com'. Another heuristic indicates a PDF link farm, with the first URL being 'cdn.shopify.com/s/files/1/0438/1330/6530/files/29518390810.pdf'. The document body, though heavily obfuscated, contains references to these URLs. The primary intent appears to be directing users to malicious infrastructure through these links.

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=base+pasito+song
    • http://files.wasatchguitar.com/uploads/1/3/0/7/130776046/jikadetoniwa.pdf
    • https://cdn.shopify.com/s/files/1/0438/1330/6530/files/29518390810.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/umbilical_hernia_in_infants.pdf
    • https://cdn.shopify.com/s/files/1/0437/8991/0167/files/87064831619.pdf
    • https://cdn.shopify.com/s/files/1/0434/4994/2168/files/buku_politik_etis.pdf
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/karobawixiwulerokojofax.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6647/files/panupuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/vaxawozobawa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/pixuvixanesisod.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/diruvowelagodupewotaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdf
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/staind_it_s_been_awhile_lyrics.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_off000078e1.bin
7d1fbabe8edc48d1aa930026f71877c1eae6a010c1f1ef23fa1d46c788c4835f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E1 4908 bytes
font_01_sfnt_off000089aa.bin
835f5cd68c2a345e6dd3bed9b932c40466b348459bfc74439786e9ea3da324a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89AA 10220 bytes

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