Malicious PDF — malware analysis report

Static analysis result for SHA-256 a555b30e3168b1d9…

MALICIOUS

PDF

43.3 KB Created: 2020-08-18 20:28:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b9739b5d9000ec22c58415f0b27510e SHA-1: 1afaf8e65d7d1fdb7a17ee37331d666df543f394 SHA-256: a555b30e3168b1d9da959e461cf83f91ad90ff873829e140f92149ac1377f9bd
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=fam+trip+report'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure for users to access potentially malicious content. The presence of a large number of external PDF links further indicates a link farm or SEO poisoning attempt. No scripts were extracted from this sample.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=fam+trip+report
    • http://files.spiritfire.com/uploads/1/3/0/7/130775375/caf5e.pdf
    • http://duvikebo.tableandelights.com/uploads/1/3/0/7/130775162/4019979.pdf
    • http://numadavo.gaprx340b.com/uploads/1/3/0/8/130814674/pusefujejuvabe-nalokaz-xabefojovibumuj.pdf
    • http://files.suefortgensartandprints.com/uploads/1/3/1/4/131438098/8376837.pdf
    • http://files.kimbrulay.com/uploads/1/3/0/7/130740367/davububodono.pdf
    • https://cdn.shopify.com/s/files/1/0435/6482/6773/files/75213007999.pdf
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/blocking_restricted_numbers_on_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/ziwisezobiku.pdf
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/mipubegisokomog.pdf
    • https://cdn.shopify.com/s/files/1/0434/4479/7607/files/calculus_by_thomas_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/0876/8675/files/20630957986.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/89542547437.pdf
    • https://cdn.shopify.com/s/files/1/0432/5012/2916/files/xurosuxate.pdf
    • https://cdn.shopify.com/s/files/1/0438/4600/8982/files/applications_of_nanomaterials_in_various_fields.pdf
    • https://cdn.shopify.com/s/files/1/0435/1895/1576/files/lezufapaberimobibisu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5665/0650/files/most_popular_racing_games_for_android.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_off00006d97.bin
6998979e34b2736a7055b82d66ba9895a60a6f74dca20ef7601511936fe0c498
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D97 4712 bytes
font_01_sfnt_off00007d83.bin
b64ffebf2945fd4f0caaf6fba6cdf0faa15435414ec76495d218ab519822ca89
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D83 10368 bytes