Malicious PDF — malware analysis report

Static analysis result for SHA-256 f89c606a097dc36b…

MALICIOUS

PDF

40.0 KB Created: 2020-09-09 14:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 045a4510b693c351a1402d8540c62015 SHA-1: 4c094e60354a4907953b98bacd28876a2fc5942d SHA-256: f89c606a097dc36b92bb741ddf35f619d2788437e69c4968bf1cf936f081a49e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to host numerous PDFs. One of the primary links, 'https://ttraff.link/pify?keyword=formation+continue+automatisme+industriel', is identified as a malicious redirector. The document body, though heavily obfuscated, contains similar URLs and text related to industrial automation training, suggesting a lure to trick users into visiting malicious infrastructure.

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.link/pify?keyword=formation+continue+automatisme+industriel
    • http://files.anneboring.com/uploads/1/3/0/7/130738564/9608893.pdf
    • http://rerugu.ijm.mercglobal.org/uploads/1/3/0/8/130874276/zeduva-sejevisefuvuti-segezixufekoxod-nokonulorepuxa.pdf
    • http://files.topnamsausage.com/uploads/1/3/2/7/132712093/pofug.pdf
    • http://files.cantonbarbell.com/uploads/1/3/1/3/131379991/6151417.pdf
    • http://files.rogstadreunion.com/uploads/1/3/1/4/131407530/sokevo.pdf
    • http://todawodep.yitaichung.com/uploads/1/3/1/3/131398560/gaboguros.pdf
    • http://kezowuji.melissalamoureuxlmft.com/uploads/1/3/1/4/131453872/bb8f3ac3152.pdf
    • http://files.ebchinese.org/uploads/1/3/0/7/130776230/2e2e2aa6.pdf
    • http://files.normannicholson.org/uploads/1/3/0/7/130740624/lekus-boxopimurod-goxebevom.pdf
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/dixinevikogewuvas.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/rukemokaloregikefiwal.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8381/files/46087355806.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/vulidopaxititera.pdf
    • https://cdn.shopify.com/s/files/1/0431/5938/8316/files/30_minute_seder_haggadah.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_off00005f85.bin
4fd41d33d8226e5df59f11ceeac012e629a03d0c6686a69ff05862b4b5071824		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F85 5040 bytes
font_01_sfnt_off0000708b.bin
d7469d2b5abab1dff665f8a1ea096447c64a000b2b83d3446cbc2ab74f3b6fa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x708B 10212 bytes

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