Malicious PDF — malware analysis report

Static analysis result for SHA-256 059e362e9c0b9e96…

MALICIOUS

PDF

34.9 KB Created: 2020-08-29 17:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc8f2b7a1fd6a9d14d89433a1f4b8b14 SHA-1: 5583b458116f53ea9c2c6245999ba5d7c77a6af3 SHA-256: 059e362e9c0b9e966bf19f96051aef0e060c169987f70f3d4463b77cc41e31cc
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, disguised as search results for a game. This is further supported by heuristics indicating a malicious redirector and a link farm. The embedded URLs and the overall structure suggest an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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.cc/wix?keyword=pokemon+amarillo+rom+espa%25C3%25B1ol+descargar
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/lejopopeda.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/27967404965.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/fawumoxogepo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/89954240989.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/tube_digestif_anatomie.pdf
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/runiziz.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/68892825560.pdf
    • https://static.usrfiles.com/ugd/b8c837_31acf244f30c48d9ba84016a7ceea100.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d3cc17852454d7e8de1d08a46563404.pdf
    • https://static.usrfiles.com/ugd/b8c837_345162eb8cd841059827dcb328f2ac6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_de39db9160a14e5b852ed7e15ec69196.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a63269d233744f78dbcf25a874501d0.pdf
    • https://static.usrfiles.com/ugd/b5aed9_8349160dcca745d2af4b32f4205be345.pdf
    • https://static.usrfiles.com/ugd/b8c837_d35862a6fabe4deaa45b4555f8f02bd8.pdf
    • https://static.usrfiles.com/ugd/b8c837_9436f4bf0adf43519e33418329dfb0f1.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_off00004715.bin
6a888eab0ca7c3ed473276579a6be8d2c6827690b836f960051e1bf6bf3f5ef3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4715 5668 bytes
font_01_sfnt_off00005a04.bin
e8572461b5b6a1acdae4b1c023f4df514696b7dbaa157d937e96f0f403a35ce3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A04 10720 bytes