Malicious PDF — malware analysis report

Static analysis result for SHA-256 c047c103306d2ff8…

MALICIOUS

PDF

47.6 KB Created: 2020-08-16 13:20:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8413b0407e324852e1d904b3245ad4a7 SHA-1: f68a5b770a1d5f263862b8491ce3b9882617d83e SHA-256: c047c103306d2ff8d55afa97d32c1c49a6c1f975e26cc031ed60a66f32d7d381
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, suggesting a malicious intent behind the link farm. The document body is heavily obfuscated and contains the malicious redirector URL, further supporting this. 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.com/pify?keyword=circle+of+5ths+sheet
    • http://dokowok.freemarissanow.org/uploads/1/3/1/8/131871674/6ce60f562af.pdf
    • http://files.cjsprofessionalcleaning.com/uploads/1/3/1/6/131606094/jivanuroxox.pdf
    • https://cdn.shopify.com/s/files/1/0450/0199/8504/files/best_way_to_get_coal_stardew_valley.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/cognitive_archaeology_and_human_evolution_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/1789/6089/files/vafeverorozifiruko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/banen.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/wepefosedofegojodar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/51571649673.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/pimejawol.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3733/files/romofakojaje.pdf
    • https://cdn.shopify.com/s/files/1/0435/2894/5819/files/88569334549.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3021/files/37723019974.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/21325757325.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/2020_monthly_calendar_tamil_nadu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7562/4355/files/pusenigetopawukajasezolo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4333/files/41347202980.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_off00006978.bin
e6ad7baaadc1e129f3a0476bc5e9a11f70876945c25eda5f37a334749eeaf3c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6978 4788 bytes
font_01_sfnt_off000079b8.bin
91b9056765165410127eef46d0c8ef2b6ee11e2ef9d92e95d11704b001e42145
pdf-font-stream PDF embedded font (sfnt) at offset 0x79B8 10032 bytes
font_02_sfnt_off00009c41.bin
46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C41 16120 bytes