Malicious PDF — malware analysis report

Static analysis result for SHA-256 58a7235ed1cf3a99…

MALICIOUS

PDF

40.5 KB Created: 2020-08-09 21:34:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c074a9acafa89bf9ed4d8122ae70e9b SHA-1: 2a8b4d1b9fb429c56a373488dbcbe6881bc4f984 SHA-256: 58a7235ed1cf3a9989eba317b7ad008609b7204aea53f8a794692ecd18b53856
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One prominent link, 'https://ttraff.com/pify?keyword=allergic+bronchitis+treatment+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'allergic bronchitis treatment pdf', suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly indicates maliciousness.

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.com/pify?keyword=allergic+bronchitis+treatment+pdf
    • http://xitovimi.janetmariesola.com/uploads/1/3/0/7/130739227/sibugufadeba_vakuzob_sodaredaxajuj.pdf
    • http://files.diysecurityalarmsystems.com/uploads/1/3/0/7/130738622/jovufikofumoxav.pdf
    • http://files.vallemagica.com/uploads/1/3/1/4/131437523/b2fc799cb9a43a.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8447/files/zosamekujisisiwewarinuzo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/69350768442.pdf
    • https://cdn.shopify.com/s/files/1/0434/0806/4677/files/cessna_172sp_checklist.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/rixedigufewapapowiximibez.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/jiwukowewesizokuf.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/36396486552.pdf
    • https://cdn.shopify.com/s/files/1/0438/2969/0525/files/vaxepesazenilaligogu.pdf
    • https://cdn.shopify.com/s/files/1/0438/5030/1590/files/41842157489.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/applied_mathematics_letters.pdf
    • https://cdn.shopify.com/s/files/1/0435/4598/5192/files/fozelalevebesub.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_off00005f2a.bin
8f5386d7a019f1f2f455d8c055f4c7dc5b4d3f23095caf93881b7ab510b86990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2A 5700 bytes
font_01_sfnt_off0000725d.bin
63eea50a35c0758e0893ad653aaf357bcdd307a3c309736a3dbebead4c5cf5a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x725D 10264 bytes

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