Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1902d45e81162e8…

MALICIOUS

PDF

50.1 KB Created: 2020-08-26 07:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71b39091cf31d00b2d58c7df1aedf8c9 SHA-1: 73b6f694c7812dd549e1f6fab8c645d51b018989 SHA-256: f1902d45e81162e8dfb8fd0d90b3af1124ecd679e310d9a5518af86e231d9d64
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing.

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=entidades+territoriales+de+colombia
    • http://pemiwetu.bowleyconsult.com/uploads/1/3/1/8/131857315/vanufonup.pdf
    • http://files.jesusgoes2italy.com/uploads/1/3/1/3/131383478/tefulaloz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0294/3899/files/5572583281.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2191/files/cadstd_pro_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/71085155240.pdf
    • https://cdn.shopify.com/s/files/1/0448/0316/2263/files/the_accidental_prime_minister_book_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/73181018158.pdf
    • https://cdn.shopify.com/s/files/1/0434/2828/2529/files/1401054758.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/lotupef.pdf
    • https://cdn.shopify.com/s/files/1/0436/4002/9344/files/1402677577.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/wisigitobesujobu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/use_of_conjunctions_in_english_grammar.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_off000077fa.bin
d5db4a20e56085a0c3e60a185e307e7410367b56b652e1f5bae0f8de38bbea27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FA 4972 bytes
font_01_sfnt_off000088b9.bin
2ddff0eebe44d768094968b1a2447a7e698f38e4c55debc698fede0cd4cab47a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88B9 10688 bytes
font_02_sfnt_off0000ab9d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB9D 4324 bytes

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