Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e6d38db8e3affe…

MALICIOUS

PDF

43.0 KB Created: 2020-08-11 22:20:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b865fc4caa657d0f7c8ca83355bb59b3 SHA-1: e65fc2c43dd91b21d4a412154f1639f67fd43ca8 SHA-256: 47e6d38db8e3affe951ba47424c24aff76e5b32e2aaafbe32e56c622576622ce
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. Additionally, the document exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to potentially compromised Shopify domains. The ML classifier also strongly indicated maliciousness. The primary intent appears to be redirecting the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=cash+cardio+book+pdf+download
    • http://nuzatag.greenstartactical.com/uploads/1/3/1/4/131437502/pibesezijojuti.pdf
    • http://files.littlehartspreschool.com/uploads/1/3/2/6/132695472/fb91e4f8b2b6.pdf
    • http://files.gustafjackson.com/uploads/1/3/1/4/131438869/1058012.pdf
    • http://files.oceanheartscollide.com/uploads/1/3/0/7/130775653/xanotapabi.pdf
    • http://files.carlsonaerialphotoandvideo.com/uploads/1/3/1/1/131164402/6828284.pdf
    • https://cdn.shopify.com/s/files/1/0434/7569/7830/files/adeste_fideles_spartito_accordi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0526/files/longest_increasing_subsequence_python.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/retonevulukipirivil.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6721/files/cisco_3750v2_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/87295666582.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/zafedepifol.pdf
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/doduwasiteniw.pdf
    • https://cdn.shopify.com/s/files/1/0428/8200/7199/files/72930755521.pdf
    • https://cdn.shopify.com/s/files/1/0432/7840/1700/files/bluejackets_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5785/7187/files/mazusujudoxoponenovibij.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_off00006ab8.bin
ca288ec42a2d6eccd44bab9bebf917c348d55fd15ea2d9d453743ffc282f86ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB8 5444 bytes
font_01_sfnt_off00007d40.bin
40138f30e3a6e6a1b9582dd0a5b2c260438435275be520c52fbc3964fd6848d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D40 9904 bytes