Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6b5d462cc3fc309…

MALICIOUS

PDF

70.7 KB Created: 2020-08-10 06:49:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba81b9926d7518c03c426b569f9fa4a2 SHA-1: 06901feace4603743603682d92dae67a38cb33b1 SHA-256: a6b5d462cc3fc309b37bf248c5ae32dc282bd762fe55eb6265b7e481846470e6
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.ru/pify?keyword=el+banquero+anarquista+fernando+pessoa+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=el+banquero+anarquista+fernando+pessoa+pdf
    • http://files.wcfparkour.com/uploads/1/3/2/6/132680789/fifopuzazome.pdf
    • http://files.skyops.com/uploads/1/3/1/4/131406258/bomemawasarowufokep.pdf
    • http://faranuzis.rsvptravelvisas.com/uploads/1/3/0/7/130739678/xetalutopirenoxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/67829516604.pdf
    • https://cdn.shopify.com/s/files/1/0428/8577/5519/files/92614298930.pdf
    • https://cdn.shopify.com/s/files/1/0435/4415/0165/files/48879925985.pdf
    • https://cdn.shopify.com/s/files/1/0428/6251/0236/files/mesaweditikudawi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/garen_jungle_build.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/jetig.pdf
    • https://cdn.shopify.com/s/files/1/0440/4789/2630/files/86029885010.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/wedosap.pdf
    • https://cdn.shopify.com/s/files/1/0432/4877/9426/files/assistant_manager_accounts_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/0141/3785/files/muginijineduwanow.pdf
    • https://cdn.shopify.com/s/files/1/0429/7588/7523/files/zeduvaza.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/fusozipuwuxeveluxij.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/
    • https://cdn.shopify.com/s/files/1/0428/6251/0236/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4b4.bin
fb474c450d90c7a9fe745b98e67e633b59448feaafb6654cb2591d416d2386a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B4 5256 bytes
font_01_sfnt_off0000e69a.bin
f99461a6bd0a33fcf87bddb0ebdc926d8b2207d1d03b2ba79c4bf3c99c6ae103		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE69A 11460 bytes

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