Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b7ad32be0d8a0d1…

MALICIOUS

PDF

60.6 KB Created: 2020-08-12 02:26:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0a2e839fdab3da62566c5fad7439c61 SHA-1: 4b019e243331b9a96c3f3ae2f41f6f78a1204095 SHA-256: 8b7ad32be0d8a0d119c65ffe328bad31b76825187409250c99e05dda30136fec
128 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is presented as a download link. The document body contains obfuscated text and embedded URLs, including the malicious redirector and a benign Shopify link, suggesting a lure to a malicious site.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=california+regions+map+pdf
    • http://dogage.pennybrumbaugh.info/uploads/1/3/0/7/130740019/pagubalom-limigusosiza.pdf
    • http://files.icitgonda.com/uploads/1/3/1/3/131398423/5f0cf2380f6f.pdf
    • http://files.thornhillactingstudio.com/uploads/1/3/0/7/130775528/papagubela.pdf
    • http://files.modestmayboutique.com/uploads/1/3/2/6/132683328/4b0068378423e.pdf
    • http://xilif.massagehappyending.net/uploads/1/3/1/4/131453574/3135593.pdf
    • https://cdn.shopify.com/s/files/1/0446/1504/1187/files/chronological_bible_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mogapusezonoxifetomo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/57111013601.pdf
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/andragogy_theory.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/zerarixitakimepomupe.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/51776148727.pdf
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/alto_sax_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/8999/files/40737380902.pdf
    • https://cdn.shopify.com/s/files/1/0437/2702/8375/files/jopokusupisegaxupadifoje.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5783/files/68322223033.pdf
    • https://cdn.shopify.com/s/files/1/0437/3934/9146/files/angels_in_america_part_one_millennium_approaches.pdf
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/security_guard_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/3287/0037/files/jasimodosiwevexuver.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
stream_005_off0000c9a8.bin
468ef75c9b0c50081a2da2276a1f3452422aac5130a1839aab6e347911355a6d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC9A8 18156 bytes
font_00_sfnt_off000087d4.bin
e55048be364c90ffbf14d8c82b25c9593c0bc9b3a789b868df1cdf2e122e6d05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87D4 5268 bytes
font_01_sfnt_off000099a4.bin
3cc43188bde34e5b4d071055c2f4d041aa44ba95e2ac8fb1a02ba1892ba728cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99A4 15432 bytes

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