Malicious PDF — malware analysis report

Static analysis result for SHA-256 345e010b687661dc…

MALICIOUS

PDF

62.1 KB Created: 2020-07-29 19:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ae2f9381e6aa35459c9783d28a0708e SHA-1: e198ce2317db187cc88cd5fdec71df17f89b6fae SHA-256: 345e010b687661dc3dc70c01fbed61613f25f6661c2966c7c62269c57261aff9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, appears to be a lure for a PDF download. The presence of numerous external links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to drive traffic to malicious sites. The primary IOC is the malicious redirector URL.

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=the+bogleheads+guide+to+the+three+fund+portfolio+pdf+download
    • http://files.walnutavenuechristianchurch.org/uploads/1/3/2/6/132696210/newudeto-fudozasefezud.pdf
    • http://files.lhasaapsocanada.com/uploads/1/3/1/0/131069824/9d93cd82b149a.pdf
    • http://files.bromptoncourttownhomes.com/uploads/1/3/0/7/130739835/6098331.pdf
    • http://files.katascuba.com/uploads/1/3/1/4/131483253/5349126.pdf
    • https://cdn.shopify.com/s/files/1/0437/2047/4779/files/fusinepunozalego.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/vojolalozitexanifovifik.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7548/files/97362155576.pdf
    • https://cdn.shopify.com/s/files/1/0429/3168/3484/files/99593959244.pdf
    • https://cdn.shopify.com/s/files/1/0429/2814/4543/files/siratefizegadurorazujad.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7495/files/tuzukerur.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/50960270321.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/gapigemapijiwalipo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9957/files/wobojuwajozuzonuji.pdf
    • https://cdn.shopify.com/s/files/1/0433/2834/0123/files/90956052681.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/mafovebawivunegoziv.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/nuxopiwerixativar.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_off0000b265.bin
6f79b912127e0dc35512a27983d10f03f5ad4bfe027b71141db045c34c3ccf8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB265 5368 bytes
font_01_sfnt_off0000c4a7.bin
a623c82a11b6898d977ecc29c67d2186b26de57e77b9fd039627ef64aa3a817b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC4A7 10916 bytes

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