Malicious PDF — malware analysis report

Static analysis result for SHA-256 230086fc88a36a45…

MALICIOUS

PDF

47.2 KB Created: 2020-08-08 22:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5824111680f5ebd3efaca925e89bc15c SHA-1: ebae6992fe5aaff11076cd08c5722061d0b3c7ff SHA-256: 230086fc88a36a45a517b28a0ee2ac378e82cbf6e8cb4f084ad3a1bf3af8e339
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the lure. The primary malicious URL is ttraff.ru, which is used in a redirection chain. The presence of numerous Shopify links suggests an attempt to blend in with benign content, a common tactic in SEO-based link farms.

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=audio+amplifier+schematic+diagram+pdf
    • http://files.bagboys.com/uploads/1/3/1/4/131438312/wanibuwawegobe.pdf
    • http://fapobasiw.atlantamixradio.com/uploads/1/3/2/6/132681513/2547180.pdf
    • http://files.dadebate.com/uploads/1/3/1/8/131857445/tomufuxanojopewib.pdf
    • https://cdn.shopify.com/s/files/1/0447/4103/4135/files/black_s_law_dictionary_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/tudoxarakakazopifimavaliv.pdf
    • https://cdn.shopify.com/s/files/1/0440/6149/1352/files/gejelojigifaxevuvi.pdf
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/63363589399.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/voicemeeter_banana_hotkeys.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/73075777375.pdf
    • https://cdn.shopify.com/s/files/1/0430/8041/7447/files/afridi_tribe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7443/7791/files/74461986655.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0664/files/5567914596.pdf
    • https://cdn.shopify.com/s/files/1/0431/4441/3341/files/32070971430.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0429/4141/5580/files/kogimubapemi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/85395936730.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_off00006af0.bin
067e2dfa6f0944340c33c9b2f00730a866093c44e0b9a3f538e22621c4412052		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF0 5332 bytes
font_01_sfnt_off00007d1f.bin
6cafd82698b0f08c895509f4786e39b1913e455abcfff03060b25199b36369b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1F 11196 bytes
font_02_sfnt_off0000a1bb.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1BB 4324 bytes

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