Malicious PDF — malware analysis report

Static analysis result for SHA-256 465977cb69b2fb4c…

MALICIOUS

PDF

40.4 KB Created: 2020-08-23 14:48:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5494f7a25df7a2ff6c52d05c9a1a6038 SHA-1: 92245d2b5828be922ff6254ddc6c56d8f4cb5d0d SHA-256: 465977cb69b2fb4cadaf27ff57036dfd708fc1d585c153ee0e0742380371f297
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains hosting other PDFs. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=skripsi+brand+awareness+pdf'. This suggests the document's primary purpose is to redirect users to malicious content, likely for phishing or malware distribution.

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=skripsi+brand+awareness+pdf
    • http://files.tiasouders.com/uploads/1/3/0/9/130969433/6930705.pdf
    • http://tapefe.pavsartofmetal.com/uploads/1/3/1/3/131383483/3803316.pdf
    • http://jetabeviz.leekindleforestry.com/uploads/1/3/1/4/131437508/7746912.pdf
    • http://jatone.trevorbriska.com/uploads/1/3/1/0/131070374/fibidejubomafa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/90883216597.pdf
    • https://cdn.shopify.com/s/files/1/0435/7786/8443/files/nisipatira.pdf
    • https://cdn.shopify.com/s/files/1/0433/9272/9246/files/xikuredizadafegazela.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/bowgun_mhw_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/puboluxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/9679/9384/files/an_introduction_to_underwater_acoustics_principles_and_applications.pdf
    • https://cdn.shopify.com/s/files/1/0428/8764/3303/files/pebemewopab.pdf
    • https://cdn.shopify.com/s/files/1/0464/1734/6728/files/94308225440.pdf
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/51849577758.pdf
    • https://cdn.shopify.com/s/files/1/0450/8745/7432/files/cognitive_ability_test_for_students.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/succession_planning_policy.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/chargeable_assets_acquired_form_11.pdf
    • https://cdn.shopify.com/s/files/1/0434/4755/0119/files/stuart_fishing_report.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_off0000600f.bin
614d2124649ecdbeef67994b5493cc5b4a38a628262fa08c916ccf8ee4c57ffa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x600F 5400 bytes
font_01_sfnt_off00007287.bin
3a8c3a2b8886746bc1a86387354a67665bc8c4a4cd0c4f409ae091e3a08fbe9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7287 10116 bytes

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