Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5a5d7d481746f29…

MALICIOUS

PDF

47.5 KB Created: 2020-07-31 11:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7259f9e68c18c88f9199e0bcdd3f9f0f SHA-1: 998c17747f524db719963acbf9580d60683b064b SHA-256: d5a5d7d481746f29ba7e67819a26c201e01a288cd090c997af8739dfe9655002
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it exhibits a PDF link farm, with numerous external links, many pointing to Shopify domains. The primary malicious URL identified is ttraff.cc, which is likely used to redirect users to a malicious site or download further payloads. The document body is heavily obfuscated and unreadable, providing no further context.

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.cc/pify?keyword=passiv+voice+englisch+%25C3%25BCbungen+pdf
    • http://files.wslarchitect.com/uploads/1/3/2/6/132681647/8278873.pdf
    • http://files.redhandprints.net/uploads/1/3/0/9/130969811/46ad819a545.pdf
    • http://files.livinggodsmission.com/uploads/1/3/0/8/130874413/femobupowufebekoluta.pdf
    • http://files.shadesofbeautyphotography.com/uploads/1/3/2/6/132681212/sobexasobodir_dazozuge_jofivikifanawi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5445/files/69339966948.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5671/files/41326169218.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/95394951404.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6022/files/41098058434.pdf
    • https://cdn.shopify.com/s/files/1/0432/5690/5885/files/putuxozak.pdf
    • https://cdn.shopify.com/s/files/1/0434/8382/4294/files/86773876731.pdf
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/tezuzekopadanofakonal.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/lubiwipabogawukajalulafuw.pdf
    • https://cdn.shopify.com/s/files/1/0439/7996/4574/files/tisezam.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/5629379348.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/redukenedobitaguwowok.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/mobuvemudurawotezenos.pdf
    • https://cdn.shopify.com/s/files/1/0440/8174/1976/files/73231867817.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_off00007820.bin
11fc8d6eceabfcf6700c738d04e8865305b426bb9111a17768c14bd71c2fd1da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7820 5444 bytes
font_01_sfnt_off00008a5d.bin
7d515d17d8d99b2d91429fa9b57d7cf3cf95ba549efaf07f157dd3e1eb3ca91c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5D 10844 bytes

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