Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cdf4e6bdf0debd8…

MALICIOUS

PDF

46.1 KB Created: 2020-08-27 13:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc6a29f3ef41d93f62940abd3d290a92 SHA-1: 377738bb1023ec8056d096cad567e72f0d109731 SHA-256: 3cdf4e6bdf0debd80cd79453885b0ea3b8a7f4e83e5538407ae041f3149e6f17
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains the same URL and a lure for a movie download. The PDF also contains a link farm heuristic, indicating it's designed to host numerous external links, many of which are hosted on Shopify but point to potentially malicious content.

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=kelor+kirti+full+movie+download+3gp
    • http://files.bingocompany.net/uploads/1/3/1/3/131379612/d2857f2095895b.pdf
    • http://files.parishofhtssm.ca/uploads/1/3/2/6/132681342/8828931.pdf
    • http://xesun.treasuresinthevalley.com/uploads/1/3/1/3/131380181/bf164e41c7.pdf
    • http://files.truthlifevictorychurch.org/uploads/1/3/2/6/132682813/f0655cf813782.pdf
    • https://cdn.shopify.com/s/files/1/0430/3912/9751/files/basics_of_rf_communication.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/xosovixazatad.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/xuzaxuxubuwodelovezapudus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/pokemon_emrald_legendary_pokemon.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/laxipuzun.pdf
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/texomesagel.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/tooling_aranda_lasch.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/22428288773.pdf
    • https://cdn.shopify.com/s/files/1/0431/1610/1781/files/shiny_pokemon_sword_and_shield_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/bd_flag_wallpaper.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_off0000733f.bin
0a0db4b58bed75de534287b91c8adc85f2b5619f11d3643d11a64aa090bb778e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x733F 5532 bytes
font_01_sfnt_off00008613.bin
1cd10f3bec80e8426e1aaec9c3d59dc525ec10c7c6d3eb6da64994c088d842aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8613 11076 bytes

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