Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d02aebf8fd34e2e…

MALICIOUS

PDF

37.9 KB Created: 2020-08-30 00:29:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d04ddd2e3568b72671b6eb367055122 SHA-1: 060b1098094b546da8f86b7d68d2e242c438884a SHA-256: 5d02aebf8fd34e2e4a5b653d42118278df3958bc9dd072be7df3c11fd07c314b
154 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 site or download. The document also contains a large number of embedded links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent.

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=sable+death+mask+ffxiv
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/95511350925.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/fovunoxevuwabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/nice_select_jquery_dublicate_values.pdf
    • https://cdn.shopify.com/s/files/1/0430/4178/3959/files/66404974154.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/campaigner_personality_type.pdf
    • https://static.usrfiles.com/ugd/67e251_996ff3aefb1f4e9790b4cd9978e7f92a.pdf
    • https://static.usrfiles.com/ugd/253000_b5017bb6eeaf48d898e9cdd3bbcb9553.pdf
    • https://static.usrfiles.com/ugd/fa6f14_c3dcd8b4aed84a3290d61dc1b24a5a73.pdf
    • https://static.usrfiles.com/ugd/b8c837_f53f307fa0df48128f1fe8f7a253689a.pdf
    • https://static.usrfiles.com/ugd/b8c837_ae2353dbd8ff440390744f326616ca06.pdf
    • https://static.usrfiles.com/ugd/b8c837_486f1f31eea14163a8fc8d6835a42799.pdf
    • https://static.usrfiles.com/ugd/ca32a8_4334a46e65e54667941503cd5f703496.pdf
    • https://static.usrfiles.com/ugd/b8c837_a77677dbcb4b448a8aa4d3c41675b922.pdf
    • https://static.usrfiles.com/ugd/b8c837_2715550b621f498fa91be0e05fa707c6.pdf
    • https://static.usrfiles.com/ugd/f515ca_2504bb6a66b0479d8674ae44ed627ac2.pdf
    • https://static.usrfiles.com/ugd/b8c837_04bdddd48700441bb53d7274cfbef8dd.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_off0000556f.bin
665af440e601acef28c8cd0d8939b2bdb13fccd8ff06810102aad0fead3bd0b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x556F 5484 bytes
font_01_sfnt_off00006802.bin
f7b39c5c3bffe968378d159896c84911871f82df79edefd09d59996533d1c9dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6802 10276 bytes

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