Malicious PDF — malware analysis report

Static analysis result for SHA-256 37287f35646df191…

MALICIOUS

PDF

46.3 KB Created: 2020-07-31 14:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84acde5d15e16d629a6961dab0a13e1f SHA-1: 7489fa1b311f0c8399c2ab93aad07d4703deacf2 SHA-256: 37287f35646df191d6c421ffb3d27ae7615e34a4fa02450a24075fef4836aff0
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document is designed to lead the user to a malicious site. Additionally, a large number of external PDF links were found, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of a malicious intent.

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=algorithmic+trading+systems+pdf
    • http://files.charliebreckenridge.com/uploads/1/3/1/4/131437493/d723e9.pdf
    • http://files.happiervalley.com/uploads/1/3/1/4/131408954/7697838.pdf
    • http://files.thesoapshepherd.com/uploads/1/3/0/8/130813330/venuvidon-gixop-jemexepoba.pdf
    • http://files.beachleech.com/uploads/1/3/0/9/130970023/3393608.pdf
    • http://files.charliebrec
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/55608820228.pdf
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/mifokisupomukikufiwadoke.pdf
    • https://cdn.shopify.com/s/files/1/0432/3183/8368/files/38069928627.pdf
    • https://cdn.shopify.com/s/files/1/0433/9387/6118/files/39639052255.pdf
    • https://cdn.shopify.com/s/files/1/0436/9504/6824/files/tosofukamozaxamonilison.pdf
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/lemovodudifeziduwokevigak.pdf
    • https://cdn.shopify.com/s/files/1/0434/6282/0005/files/buminuzalifogiwibanimasux.pdf
    • https://cdn.shopify.com/s/files/1/0435/3179/6634/files/18102259492.pdf
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/75029608398.pdf
    • https://cdn.shopify.com/s/files/1/0437/9734/8514/files/lenuzegerulaxiton.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/bugelumawa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/9078655964.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_off0000756b.bin
366d926f2ca9b50a0da66adb4b85bc8bf3df4d751bf3d9377814d4c573b09dfe
pdf-font-stream PDF embedded font (sfnt) at offset 0x756B 5448 bytes
font_01_sfnt_off000087cb.bin
3642ab6797895cb82ff00faccdd3ec3d900e10ae50bb5279782a2947119ede17
pdf-font-stream PDF embedded font (sfnt) at offset 0x87CB 10696 bytes