Malicious PDF — malware analysis report

Static analysis result for SHA-256 e626ac4c1cf48750…

MALICIOUS

PDF

46.6 KB Created: 2020-08-19 21:06:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 462fc3c8636c57df5dcb0dc458bce9f8 SHA-1: a140e8de6d1c0dade41a506cd0059c58eb108783 SHA-256: e626ac4c1cf4875023657ab42f405f581f13de2a03ee808cc9669635c2ecc3db
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 the presence of a large number of embedded links, a technique commonly used to redirect users to malicious sites. One critical heuristic firing indicates a link to known malicious redirector infrastructure. The document body contains garbled text and metadata, suggesting it is not intended for human consumption but rather as a container for malicious links.

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=arteriovenous+malformation+hemorrhage+brain
    • http://files.harvesttruths.com/uploads/1/3/0/7/130739616/wubizutupafilav-kuvevax-wedipirenabo-sivivinifinow.pdf
    • http://xavata.mikeparamore.com/uploads/1/3/1/8/131856809/pulujufuvo-botizevub.pdf
    • http://files.commonwealthah.com/uploads/1/3/0/8/130814208/bb928f.pdf
    • http://vonetofod.kikoriapp.com/uploads/1/3/1/3/131383309/zisimonokixip-mafezabudivotu-topasimaguj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3176/3864/files/lolixumekirikew.pdf
    • https://cdn.shopify.com/s/files/1/0429/9581/0455/files/44533447275.pdf
    • https://cdn.shopify.com/s/files/1/0437/6887/3112/files/repiwekegalakafew.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/71464365945.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/tivule.pdf
    • https://cdn.shopify.com/s/files/1/0437/9358/0181/files/lymphatic_system_summary.pdf
    • https://cdn.shopify.com/s/files/1/0434/4545/2967/files/66535344529.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/bijenoforenukevutuzabuma.pdf
    • https://cdn.shopify.com/s/files/1/0431/2550/6208/files/85573425964.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/traditional_bowyers_bible_free.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_off0000788d.bin
68a65e00b530d1ff5ac4d709d70a5c2e2c75d5a153ee31aebdaad5c939382887		 pdf-font-stream PDF embedded font (sfnt) at offset 0x788D 5372 bytes
font_01_sfnt_off00008aaf.bin
17f110fb067a8f40bd5ae2cd65682b20124312de050680861c0af70d2134fb6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAF 10240 bytes

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