Malicious PDF — malware analysis report

Static analysis result for SHA-256 142022595a780c4c…

MALICIOUS

PDF

70.6 KB Created: 2020-08-20 20:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6752b96d5409e46dede5ab923cdd672 SHA-1: af3cda583b42252c2809fff59a41c83269b1476f SHA-256: 142022595a780c4c4f40fc71aec5745933db224f8ee4110d64066a47a7d3c0b2
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious payload or phishing page. The presence of a 'download button' heuristic and numerous embedded links, many pointing to Shopify, suggests a link farm or redirection tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=2014+movies++in+tamilrockers
    • http://files.lavadaslens.com/uploads/1/3/2/6/132682235/3414056.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/gixokuvik.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/pokemon_planet_controls.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/arundina_graminifolia.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/totavari.pdf
    • https://cdn.shopify.com/s/files/1/0433/5029/4687/files/murder_mystery_values.pdf
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/car_games_parking.pdf
    • https://cdn.shopify.com/s/files/1/0429/7405/2503/files/ropimowe.pdf
    • https://cdn.shopify.com/s/files/1/0436/7902/3257/files/atomic_structure_atoms_and_molecules_classification_of_elements.pdf
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/85082039695.pdf
    • https://cdn.shopify.com/s/files/1/0440/9986/2680/files/44813441167.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000abb6.bin
ef7fcc0b20c9d477e441c752686db9d1363ab12b7a6666c1e3bb351b26759622		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABB6 5176 bytes
font_01_sfnt_off0000bd2e.bin
bb63dde0896b1c4b25d3aad0d689c7452673e9eb1700e4d458c54e9f28d5d705		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD2E 11444 bytes
font_02_sfnt_off0000da88.bin
4e714449fe3788733893052402d526ec9072eef7d59f2c82fa0049afe4cf34cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA88 11064 bytes
font_03_sfnt_off0000ff91.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF91 4324 bytes

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