Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f07642212cdff1c…

MALICIOUS

PDF

59.6 KB Created: 2020-08-19 23:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1370ddd852016d3e545553ab8b38e8c SHA-1: 4beacad9120daa19ab67c3b85050bd8ef1956fa9 SHA-256: 2f07642212cdff1c00616a0732a8291ffadfd044acefc897ea29cabfe2db698b
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL points to 'ttraff.com', which is known for redirecting to malicious sites. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely to obscure the malicious destination.

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=descendants+2+songs+mp4
    • http://files.sweetsister-chicsister.com/uploads/1/3/0/7/130776518/6ed655a65662.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5312/files/newisanowibavojixile.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/kusawapaxenekatumavegimi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3206/files/application_form_for_job_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6472/1562/files/border_gateway_protocol_configuration.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/92127459127.pdf
    • https://cdn.shopify.com/s/files/1/0430/0950/7487/files/tidozosakixeroxin.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/vokinuzodakegazurumojir.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/gexelakuregunuluna.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/xaxivifazufagizago.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/best_chinese_learning_book.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a2a.bin
1a22a91f3fb20ff82f91930ed38c3c2bbe52716155fa295d2b5c53ce0a7addfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2A 5484 bytes
font_01_sfnt_off00009cc7.bin
7ed4388ac7369eadb22594ef11d39a541b823541e74f2e70e9f5b1bd54bb4512		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC7 10864 bytes
font_02_sfnt_off0000c219.bin
96ab3042575e6db92b7bad1aac42ed8095504d59665b3326cf7857e97d54a14f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC219 18776 bytes

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