Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf3f4a906863119…

MALICIOUS

PDF

45.8 KB Created: 2020-08-11 01:31:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d0aa9b06930497f3087bb7d12f15b58 SHA-1: 6f8989ad6b1ab25b88f9c3104ff81ef60c1fbda5 SHA-256: daf3f4a9068631197a1b660a8a5387fbd470e819be3617e6d6396936579fccd7
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com, which is a known malicious domain. Additionally, it features a PDF link farm with numerous links hosted on cdn.shopify.com, suggesting an attempt to game search engines or distribute content. The document body, though malformed, contains the same URL as the redirector, indicating it's the primary lure. The presence of a callback phishing lure heuristic further supports a social engineering attack vector.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=boiler+draught+nptel+pdf
    • http://files.auntiesmellgoods.com/uploads/1/3/2/6/132695601/gowuja.pdf
    • http://files.interimarketing.com/uploads/1/3/1/1/131163836/1bf9fe455.pdf
    • http://vawakov.xgens.org/uploads/1/3/0/8/130814328/5097449.pdf
    • http://files.boloker.com/uploads/1/3/2/3/132303226/be5b8bea69c.pdf
    • http://files.coloradoinclusivefunders.org/uploads/1/3/1/4/131483009/telemikogidirijema.pdf
    • https://cdn.shopify.com/s/files/1/0437/3066/5637/files/werupovalu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/automatic_transmission_vs_manual_transmission.pdf
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/sixesitodisewujola.pdf
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/90431760860.pdf
    • https://cdn.shopify.com/s/files/1/0433/7952/3751/files/wotazexomuworikefete.pdf
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/xoresadez.pdf
    • https://cdn.shopify.com/s/files/1/0431/2947/1130/files/math_symbols_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/54656347963.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6119/files/93797525593.pdf
    • https://cdn.shopify.com/s/files/1/0446/6167/0051/files/ap_state_reorganisation_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/8167456974.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/ranogokaropuzumosotu.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_off000067c7.bin
873037768c97bae445df9791801c3f1bfbf0d90bf0e85251bfc5c9a511bc1a76
pdf-font-stream PDF embedded font (sfnt) at offset 0x67C7 5056 bytes
font_01_sfnt_off000078ed.bin
a6fe609406ed49170ade624c2473cd2f0aa3f1ca973dec6acb94bcc7a591c661
pdf-font-stream PDF embedded font (sfnt) at offset 0x78ED 10340 bytes
font_02_sfnt_off00009c4f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4F 4324 bytes