Malicious PDF — malware analysis report

Static analysis result for SHA-256 13f7db1f3d0d39c8…

MALICIOUS

PDF

45.8 KB Created: 2020-08-29 05:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e34522f7da9c69f4773517ff844b3a1 SHA-1: 36e7fecb3c0b19a4382d18b42f7fa0120db84458 SHA-256: 13f7db1f3d0d39c8992a1a3626a1e10a6b6e608fdc343ad8690e2439c59bab65
154 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL, ttraff.com, which is flagged as malicious. This URL is presented within the document body, suggesting a phishing or social engineering attempt to trick the user into clicking the link. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic. No scripts were extracted, but the primary malicious indicator is the redirector link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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/wix?keyword=without+warning+album+download+zip
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/garixupozikax.pdf
    • https://cdn.shopify.com/s/files/1/0432/6427/8686/files/reformed_baptist_churches_looking_for_pastors.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6212/files/26510237626.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/john_f_kennedy_airport_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/74096947165.pdf
    • https://cdn.shopify.com/s/files/1/0435/8183/3379/files/veterinary_antibiotics_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/8768/4003/files/mibiwipemifawop.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/bitibododujawurevanurivas.pdf
    • https://cdn.shopify.com/s/files/1/0450/2142/9924/files/neuroblastoma_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0462/5756/9946/files/platform_picture_ajay_devgan_ki_platform_picture.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/26265741246.pdf
    • https://cdn.shopify.com/s/files/1/0435/5502/9141/files/polystyrene_sheets_woodies.pdf
    • https://static.usrfiles.com/ugd/b8c837_63d90ac156de4c11bdc0aa0bbbf60d20.pdf
    • https://static.usrfiles.com/ugd/b8c837_81dc683b970c48aca77afce710b8cbcd.pdf
    • https://static.usrfiles.com/ugd/b8c837_588aa9cf2e3047d2b8977cb0b5e6467a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7ea4b6579c442b2aeb73c51e33c3a11.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007211.bin
262af9af6366f26a4826a83aa0653b5d2f2e386dd8daab96a4aa0335d2744979		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7211 5488 bytes
font_01_sfnt_off000084a6.bin
38cbf0b9cbb8ccdd0bbc8c2d2a6ce1be94bc2ecd3b9451b7fd82ca794abfd6b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84A6 11044 bytes

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