Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc8453a4322cf239…

MALICIOUS

PDF

43.7 KB Created: 2020-08-03 16:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72838cde354473155049bd7271c3c4a1 SHA-1: b119ba848d59f73ae85e520d7367029aed757de2 SHA-256: bc8453a4322cf2393601a59d313bc50ade07a29c2a2c63736855774eb9744730
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=dictionary+of+french+slang+and+colloquial+expressions+pdf'. This suggests the document is designed to trick users into visiting malicious websites by presenting them as legitimate resources. The presence of numerous links, including those hosted on Shopify, indicates a link farm or SEO poisoning tactic to distribute malicious content.

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=dictionary+of+french+slang+and+colloquial+expressions+pdf
    • http://files.smokefreebyattrition.com/uploads/1/3/1/6/131637658/45adb6b.pdf
    • http://files.plymouthcantoncivitans.com/uploads/1/3/1/4/131437889/2051497.pdf
    • http://files.caitlinpadilla.com/uploads/1/3/0/8/130814430/3627229.pdf
    • http://files.roeslesportsconsulting.com/uploads/1/3/1/4/131406610/eb20fccb0ecf1c5.pdf
    • https://cdn.shopify.com/s/files/1/0437/9423/5553/files/nukusovuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/7936/7845/files/dixiranawojukata.pdf
    • https://cdn.shopify.com/s/files/1/0429/2784/9639/files/kudujinifodipe.pdf
    • https://cdn.shopify.com/s/files/1/0435/1007/1448/files/bajug.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/41758269648.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/45906659153.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2145/files/53968666952.pdf
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/vodezifu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0678/files/panudes.pdf
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/vamugobirepisiwirafaf.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_off00006f3c.bin
45da9005886065a44d437db069d71a1c1fe112e0aaa15d49d93055ec32751fa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3C 5712 bytes
font_01_sfnt_off000082ba.bin
57f69529a45d8824d4c52827bc5e2d766e70f882bac908d4f00075164c41fe58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82BA 9084 bytes

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