Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccd5969cc52765ef…

MALICIOUS

PDF

41.6 KB Created: 2020-08-02 16:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3edd4a043e20d85015b22f3d6e2cbe5d SHA-1: b12b4bcdfd58905f01c2e1660cc88160809bb9ef SHA-256: ccd5969cc52765ef34d7bc4cb9bf1a69170aed28f2015896cab259bb8d11ab64
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=discord+channel+rules' and appears to be a lure related to Discord channel rules. Additionally, a PDF link farm heuristic indicates the presence of numerous external links, with the primary one leading to a Shopify domain. The combination of these factors strongly suggests a phishing or social engineering attack aimed at redirecting users to 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.com/pify?keyword=discord+channel+rules
    • http://files.projectxlacrosse.com/uploads/1/3/0/7/130739059/bexelosamogusijuv.pdf
    • http://files.joannacookeart.com/uploads/1/3/2/6/132681492/lajagoxusi.pdf
    • http://files.kdchipi.org/uploads/1/3/1/4/131406036/2295165.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/wubobexowofitixuwoxef.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/8827/1767/files/77871670097.pdf
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/geketixidoj.pdf
    • https://cdn.shopify.com/s/files/1/0436/5674/1022/files/ariens_compact_24_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/malwarebytes_activation_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/67189589111.pdf
    • https://cdn.shopify.com/s/files/1/0433/1280/8091/files/40225321833.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/43228142477.pdf
    • https://cdn.shopify.com/s/files/1/0434/0826/1276/files/71227315292.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0678/files/93572765399.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/73487654671.pdf
    • https://cdn.shopify.com/s/files/1/0438/8916/4440/files/discord_welcome_channel.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_off000064cc.bin
d7f375aee8b49b077a85fbb0b6b1900335910f0738d5991e7dfd4cecc9838ceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CC 5024 bytes
font_01_sfnt_off000075da.bin
a984a35614e235cf5af84ec1c09e1a453cd77957efe179b5e17f9a9ca2c20014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DA 10504 bytes

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