Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4bc03e269e2f359…

MALICIOUS

PDF

55.9 KB Created: 2020-08-21 16:54:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2788055f42d08431616df882a60c62f SHA-1: 59749372ccceea801b90b69cedd0e9dd7086dc71 SHA-256: d4bc03e269e2f3597b15b313923ba665abb3c476c0437fda9f9e0927c1bc281b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is designed to lure users to a potentially harmful destination. The document body, though heavily obfuscated, contains references to a 'Couch to 10k training guide' and includes the malicious URL, suggesting a social engineering tactic. The presence of numerous embedded links, many hosted on Shopify, further indicates a link farm or redirection strategy.

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/pify?keyword=couch+to+10k+training+guide
    • http://files.sgionet.com/uploads/1/3/0/8/130874413/zujojunejiguwimurob.pdf
    • http://files.noahkinsey.com/uploads/1/3/0/7/130775434/nalifude.pdf
    • http://files.sterlingsoccer.org/uploads/1/3/1/4/131455680/nupaz-kojajoni-redumor.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/motekonanoxave.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/jivilutudiwunurudokak.pdf
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/86416298541.pdf
    • https://cdn.shopify.com/s/files/1/0437/0815/4008/files/42539305224.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/35254018578.pdf
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/88483835348.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5669/files/gonipijinejorijofe.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_off00009e2d.bin
d0e9cf0643a701648ff609ea8dacbdcb5be707a014a4b8cd2ef7ca5a760a2687		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E2D 5156 bytes
font_01_sfnt_off0000afab.bin
fea1977895c14a83661d993b830ce123756259e0ee42ab2099dcaff4fb7db5db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAB 10336 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.