Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d9cbc5dbc5cb80…

MALICIOUS

PDF

42.5 KB Created: 2020-08-09 20:38:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a68e8556e774d00e522cb2d90c35da7 SHA-1: d2aecffdb65f020117fae0fe008a4419097ecf95 SHA-256: e6d9cbc5dbc5cb807ea58cf203bf0841457b49b20e61fe35164e768f73406b6a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a link farm or SEO poisoning tactic to disguise malicious redirects. The document body, though heavily obfuscated, contains the malicious URL, indicating an attempt to lure users to a potentially harmful site.

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=art+movements+and+styles+pdf
    • http://files.federicabruni.com/uploads/1/3/1/3/131381919/195876.pdf
    • http://files.menkinkontelis.com/uploads/1/3/1/4/131410662/1d325539.pdf
    • http://files.johnnoblebarrack.com/uploads/1/3/0/7/130739022/1228752.pdf
    • https://cdn.shopify.com/s/files/1/0437/5638/8510/files/12493672372.pdf
    • https://cdn.shopify.com/s/files/1/0432/5353/0788/files/15882423681.pdf
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/58833734927.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/ibps_rrb_notification_2020_state_wise_vacancies.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/bamafamadusumuzilat.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8839/files/bolotorakojobilaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/8788/7526/files/currency_act_1965.pdf
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/97271033654.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23083433767.pdf
    • https://cdn.shopify.com/s/files/1/0428/6568/8743/files/74041927053.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/gametogenesis_scielo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/anesthesia_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/how_to_grow_a_tree_in_minecraft.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_off00006915.bin
6af0c18d34e9c7b4447235a92ceec32ed4af48d2299bcedf7a2ddcc40f8249b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6915 5340 bytes
font_01_sfnt_off00007b33.bin
0d0df37802517cb8c4e3f0577257e39bb3dfd018555384f86f4149c4bcf7cef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B33 9944 bytes

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