Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0982cc06e432c8…

MALICIOUS

PDF

59.0 KB Created: 2020-08-06 09:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d82ebc313621c26d6d9ce748a2992f4 SHA-1: c45bee9c91250c87453591ec0347b9a3a7a44922 SHA-256: bf0982cc06e432c8de6aa04cd10d7d28f2ed0f488bf7c60a8be21c0e4f1491c6
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to seemingly benign Shopify URLs, but one critical link directs to a known malicious redirector. This suggests a social engineering tactic to drive traffic to malicious infrastructure. The document body itself is heavily obfuscated but contains the primary malicious URL, indicating the intent is to lead the user to a compromised site.

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=chain+rule+word+problems+pdf
    • http://files.elanaaccess.com/uploads/1/3/2/7/132740375/devijutav.pdf
    • http://files.beckydpersonaltrainer.com/uploads/1/3/0/7/130738993/viwel.pdf
    • http://jedikipir.hanmaumchurchdfw.com/uploads/1/3/0/7/130740044/duzifid.pdf
    • http://files.brandonchamberlain.com/uploads/1/3/1/1/131163540/potugogojema.pdf
    • http://latoz.lampleylaw.com/uploads/1/3/0/8/130814238/190a2cd79.pdf
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/82757078233.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdf
    • https://cdn.shopify.com/s/files/1/0446/6376/7203/files/chase_bank_mission_statement.pdf
    • https://cdn.shopify.com/s/files/1/0431/0653/3527/files/xakapenigajitevopijem.pdf
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/zip_code_00415.pdf
    • https://cdn.shopify.com/s/files/1/0433/8765/0211/files/wetuwuxisedawubadilarux.pdf
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/53195704617.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/transporter_the_series.pdf
    • https://cdn.shopify.com/s/files/1/0437/0586/0248/files/55005390095.pdf
    • https://cdn.shopify.com/s/files/1/0434/3896/4903/files/13726633610.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_off00009a85.bin
9731703981fa0e7ed1cf05b36eaa018bb82ef9141c9de5755d0d1161179393c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A85 5420 bytes
font_01_sfnt_off0000accb.bin
9742e5fafb713fc5f46718d503b020e4b4347ff7d266ab92a64d500a7602df60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACCB 16228 bytes

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