Malicious PDF — malware analysis report

Static analysis result for SHA-256 50e1edf4926e5014…

MALICIOUS

PDF

42.9 KB Created: 2020-08-09 06:30:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df0882cd2eb5071650b1e0333b10cad8 SHA-1: 4e6951766884f7dec8f90b3b7f4fcce8c4fcf577 SHA-256: 50e1edf4926e5014f2a1b1924f72f533fb80b9aedbb4379013e777a6971d5cc3
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body and heuristics indicate a lure related to PDF conversion, directing users to a link that leads to malicious infrastructure. The presence of a visual download button further supports a social engineering pretext.

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=pdf+to+word+converter+online+zamzar
    • http://kekan.insightsmanila.com/uploads/1/3/1/4/131406082/b287a04227ec.pdf
    • http://files.wiki-violon.com/uploads/1/3/2/6/132681362/warijen.pdf
    • http://gexabi.greatdunham.org.uk/uploads/1/3/0/7/130776257/zelojuvo_basaliso_gajajugedonize_rerazewomijuk.pdf
    • http://files.friendsofthelfpl.org/uploads/1/3/0/7/130740442/443b2f.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/685063887.pdf
    • https://cdn.shopify.com/s/files/1/0435/9284/3432/files/accidental_prime_minister_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/76796190677.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9680354999.pdf
    • https://cdn.shopify.com/s/files/1/0437/8296/3361/files/52638704598.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7462/files/95492927942.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32600433864.pdf
    • https://cdn.shopify.com/s/files/1/0449/4072/2331/files/social_accounting_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0427/4854/3142/files/ratajegoxoru.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/risuxasuniwipula.pdf
    • https://cdn.shopify.com/s/files/1/0429/3692/6374/files/81758660474.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_off00006958.bin
ccb8adbe44c6879f30fa6aeaf6544738c0df4df8028a7d09af4d0deaa6d6abd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6958 5192 bytes
font_01_sfnt_off00007b0e.bin
eaa1a6ff17dd6ca16b33cfee95b7786e0911474d1784c88a9dce646a9d7fc891		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0E 10504 bytes

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