Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1daa90430bb582c…

MALICIOUS

PDF

40.2 KB Created: 2020-08-02 19:59:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fb5645dc958c00252ade6d8d988d2d9 SHA-1: 2688c78f87ba3cc89b97c0ebd1817e048f794073 SHA-256: a1daa90430bb582c2278c711b5c96aacf7ff5e20fe47bc0b440bb259b050a2ec
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF redirector link pointing to 'https://ttraff.cc/pify?keyword=tiamat65renee%2540+yahoo.+com'. Additionally, another critical heuristic detected a large number of embedded external PDF links, with the first being 'https://cdn.shopify.com/s/files/1/0435/3762/9348/files/18608993169.pdf'. These findings indicate the document's primary purpose is to lure users to external, potentially malicious, resources.

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=tiamat65renee%2540+yahoo.+com
    • http://files.630shistory.com/uploads/1/3/2/7/132710697/6010257.pdf
    • http://files.melodymoonbrooke.com/uploads/1/3/1/3/131384468/823994.pdf
    • http://files.bluegrassbelties.com/uploads/1/3/1/4/131454352/josapizetememobeso.pdf
    • http://files.collegepark4u.org/uploads/1/3/0/7/130739415/9700813.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/18608993169.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/bovonenejov.pdf
    • https://cdn.shopify.com/s/files/1/0434/6816/1176/files/pubamopijasux.pdf
    • https://cdn.shopify.com/s/files/1/0440/6876/5848/files/71425148971.pdf
    • https://cdn.shopify.com/s/files/1/0439/8995/8814/files/6799539108.pdf
    • https://cdn.shopify.com/s/files/1/0437/4963/8295/files/46039180509.pdf
    • https://cdn.shopify.com/s/files/1/0430/4764/9429/files/40574412132.pdf
    • https://cdn.shopify.com/s/files/1/0438/6937/2576/files/magic_disc_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/8439/8244/files/lewakovud.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/43628100296.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajafaliwufenosikem.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/bunevogisebuwu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8502/7746/files/xuputar.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_off00005e78.bin
afac7d0fdeb176f1913f4eeb97bb5ba50ec18545299ef8cb054a8e028d372b30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E78 5524 bytes
font_01_sfnt_off00007128.bin
bebb902c03e94febf11ccd96b22fcf260db55a0df1af9bb8964e5159b88d5ed0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7128 10156 bytes

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