Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd37f78ebdea14eb…

MALICIOUS

PDF

41.5 KB Created: 2020-08-25 00:51:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4fe6f02a0487d18e440586d1cb87424 SHA-1: b4d1b06cf1346b30fd3b66fab67c8ff97947cce5 SHA-256: dd37f78ebdea14eb3a23ad78c8768252ddbbb8366d9a5adf68ab8bf3960be080
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to ttraff.com, which is flagged as malicious. It also features a link farm of numerous PDFs hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content broadly. The presence of a visual download button further supports the lure to click the malicious link. No scripts were extracted, limiting the analysis of the payload.

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.com/pify?keyword=emulateur+android+sous+linux
    • http://files.roamingcic.com/uploads/1/3/2/6/132683087/rejowodobezi-fewibakawugaj.pdf
    • http://files.thenauticalartsworkshop.com/uploads/1/3/1/6/131606035/bikebawifutir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62042090741.pdf
    • https://cdn.shopify.com/s/files/1/0437/9472/7074/files/1446308810.pdf
    • https://cdn.shopify.com/s/files/1/0435/5319/4152/files/20623928599.pdf
    • https://cdn.shopify.com/s/files/1/0462/6399/2477/files/expanding_and_factorising_quadratics_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/zevazifaluve.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/88972220.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/gijajabifuwerunusinil.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/muturokotogod.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1630/files/dulepi.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_off00006534.bin
ee18b6adbce4ff0738fd9b680b9962851e701ea486546549f793df78d89acddc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6534 4996 bytes
font_01_sfnt_off00007612.bin
a9dde574055870c594219584c487a32bfa4846c339aa7910f7eba721ce86ed23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7612 10420 bytes

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