Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2864d9b2996fcb3…

MALICIOUS

PDF

45.2 KB Created: 2020-08-28 06:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acf4433fb157209ab63d21542c65aafe SHA-1: e41fab8e204c7aa3c6352d291fd9d1e9bfaaf920 SHA-256: b2864d9b2996fcb3b09cdde91f1e09b51cf190bd83ff16f45b22c2c050865049
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=associa%25C3%25A7%25C3%25A3o+de+resistores+exercicios'. This URL is likely used to redirect users to a malicious site for phishing or malware delivery. The document also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The ML classifier strongly flags this PDF as malicious. No scripts were extracted, but the presence of the malicious redirector and the link farm strategy indicate a clear intent to lure users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.me/pify?keyword=associa%25C3%25A7%25C3%25A3o+de+resistores+exercicios
    • http://files.fourarrows-ranch.com/uploads/1/3/2/6/132681556/xudejelewofili-xikevipujalox-gizikuvaguke.pdf
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/39741561822.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/agni_siragugal_file_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/73350757819.pdf
    • https://cdn.shopify.com/s/files/1/0448/2242/9858/files/civ_vi_steam_guides.pdf
    • https://cdn.shopify.com/s/files/1/0432/6549/1107/files/suwebafomagare.pdf
    • https://cdn.shopify.com/s/files/1/0430/2068/1369/files/89211043099.pdf
    • https://cdn.shopify.com/s/files/1/0432/6824/3624/files/dutabegubib.pdf
    • https://cdn.shopify.com/s/files/1/0438/4666/4349/files/bascule_electronique.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/xapatanewixiwerata.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/10549794229.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_off00006808.bin
edc2e7143eef1bc88e962c75ef9a3b2ccfcd9073144336583acb2cf3cfe5952c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6808 5460 bytes
font_01_sfnt_off000079c2.bin
58d1b5c9badb1c35f26022174ba52a91fb75659d99e43fca72a7518b289270f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C2 15116 bytes

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