Malicious PDF — malware analysis report

Static analysis result for SHA-256 978a65cd7437e391…

MALICIOUS

PDF

42.0 KB Created: 2020-08-21 01:14:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe83d71902c85c62d1ca64c0b3197e16 SHA-1: b0ac7f6b9f7c22abe13be75b822c8e120e901412 SHA-256: 978a65cd7437e3910a1a0006ab91fe05d5da2ff42cba5f95838672e2125c84b6
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body also contains the same URL, presented as a 'Kenyan passport application form'. This indicates a phishing or scam attempt, leveraging a lure to redirect users to malicious infrastructure. The presence of numerous other Shopify links suggests an attempt to blend in with benign content, but the primary redirector is the key indicator of malicious intent.

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.ru/pify?keyword=kenyan+passport+application+form+online+in+kenya
    • http://files.bodenflooring.com/uploads/1/3/1/4/131453847/razonotejibujutot.pdf
    • http://files.trackingclubofma.com/uploads/1/3/2/7/132740852/vikofi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2119/files/success_with_reading_comprehension_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0437/0812/1242/files/70252846789.pdf
    • https://cdn.shopify.com/s/files/1/0431/2809/4882/files/29030270003.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/mamerafo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3934/files/70185188429.pdf
    • https://cdn.shopify.com/s/files/1/0439/8258/6014/files/awards_and_honours_2020_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0444/0326/1606/files/appetizer_recipes_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/sda_28_fundamental_beliefs.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/rufaja.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/7226131598.pdf
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/zimimovatakag.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/famiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/7532/1499/files/anorexia_y_bulimia_en_nios_y_adolescentes.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/full_accounting_cycle.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_off0000663d.bin
72d45c4d8bb09adc61cda44b94ea6f634d968270475f92ebc355de33cde0af06
pdf-font-stream PDF embedded font (sfnt) at offset 0x663D 5296 bytes
font_01_sfnt_off00007832.bin
90effc3a913a91aa5fb6178727418f7a81b820d4965a8119d8a257eaff2c5de1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7832 10248 bytes