Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5b0333e262c8627…

MALICIOUS

PDF

36.0 KB Created: 2020-08-20 11:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e4530b8b7ca248331293fda5784914a SHA-1: 3b0ae39773b7756eed278b65fdd9ebfbcd393acc SHA-256: b5b0333e262c8627aa4e1ad9d7010f05b7752b245864c200cd756ab2e4051277
120 Risk Score

Malware Insights

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

The PDF contains a mass link farm, with numerous embedded URLs pointing to Shopify and other domains. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=order+statistics+and+inference+estimation+methods+pdf'. This suggests the document's primary purpose is to lure users into clicking malicious links, likely for phishing or to download further malware. 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.cc/pify?keyword=order+statistics+and+inference+estimation+methods+pdf
    • http://files.roejendradesigns.com/uploads/1/3/1/4/131406762/wugagumigejo.pdf
    • http://files.shermanjewelers.com/uploads/1/3/1/6/131637147/ac9f5998cb.pdf
    • http://nawopa.u3anorthgoldcoast.com/uploads/1/3/1/8/131857334/9359134.pdf
    • http://zizegidi.laurieann-ranger25.com/uploads/1/3/1/0/131070420/2882e8446.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/vuwarolijoxedapesu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3273/9989/files/36558249060.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/fotugebadenino.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/management_consulting_business_plan_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/9800/4899/files/sdgs_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6071/files/xisokigareronokudonukad.pdf
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/twitch_borderlands_3.pdf
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/soredoretunitawinirud.pdf
    • https://cdn.shopify.com/s/files/1/0436/1748/4957/files/85602755451.pdf
    • https://cdn.shopify.com/s/files/1/0440/1401/0518/files/chutti_song_mr_jatt.pdf
    • https://cdn.shopify.com/s/files/1/0436/7027/4201/files/calderas_industriales_y_marinas.pdf
    • https://cdn.shopify.com/s/files/1/0432/1257/0783/files/pretty_woman_full_movie_in_tamil.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_off00004e08.bin
daecfd84173f06a5750b80633dd40e3b27aa2d9ca738f36547b7f1e7dbb30653		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E08 5388 bytes
font_01_sfnt_off0000602f.bin
fd9e52b11fd5747e3b319a6338f0245657660b3597a2fa4bf7233c9ab61947cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x602F 10088 bytes

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