Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dda0d83b3483fde…

MALICIOUS

PDF

40.2 KB Created: 2020-08-15 02:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae1b153ff9893cc5411bdd293bbb9828 SHA-1: 4213b3840c2eb3b4efe83478e4f832644be71feb SHA-256: 6dda0d83b3483fde99339a4a3e2805a3e20f750d77d004cb9cbecfc1b6d9063f
154 Risk Score

Malware Insights

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

This PDF document is classified as malicious due to its inclusion of a link farm and a redirector to known malicious infrastructure. The document body, though partially corrupted, contains text related to "budget planner templates free" and a URL pointing to `https://ttraff.com/pify?keyword=budget+planner+templates+free`, which is identified as a malicious redirector. The presence of numerous links to external PDFs, many hosted on Shopify, suggests an attempt to manipulate search engine results or distribute further malicious content.

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=budget+planner+templates+free
    • http://files.gokellyandco.com/uploads/1/3/2/6/132681767/1bf7399.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/mujumesotatetejanowinijel.pdf
    • https://cdn.shopify.com/s/files/1/0439/4660/6760/files/javascript_vs_jquery.pdf
    • https://cdn.shopify.com/s/files/1/0431/7986/8309/files/36352823727.pdf
    • https://cdn.shopify.com/s/files/1/0433/6897/2444/files/24080060451.pdf
    • https://cdn.shopify.com/s/files/1/0429/7218/4732/files/17932722971.pdf
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/alpinia_galanga_medicinal_uses.pdf
    • https://cdn.shopify.com/s/files/1/0433/0382/9657/files/lagrange_interpolation_algorithm_python.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/zowixobopusuzum.pdf
    • https://cdn.shopify.com/s/files/1/0435/1954/1416/files/mutofonazubabopeg.pdf
    • https://cdn.shopify.com/s/files/1/0430/2022/2627/files/historia_de_la_amalgama_dental.pdf
    • https://cdn.shopify.com/s/files/1/0431/7085/7124/files/tusuzofuwidugagunovufiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/6186/0757/files/install_g_ubuntu.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_off0000605b.bin
e0af7e67750d220b2afc8e06dfa7b8dc87c66c0ace4881fbe0cb7d4f25761b5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x605B 5408 bytes
font_01_sfnt_off000072a5.bin
87589e656220321252dacaa5abecd0bb48ab79b279240df2ba64a242bc676297
pdf-font-stream PDF embedded font (sfnt) at offset 0x72A5 9880 bytes