Malicious PDF — malware analysis report

Static analysis result for SHA-256 42d0e575ca549846…

MALICIOUS

PDF

58.0 KB Created: 2020-08-14 22:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4f7487cc5f0c07c3e8fa7f1242689ff SHA-1: f54bf6ee044870f5c877e9da5cb336fec038a5fa SHA-256: 42d0e575ca54984626d38608317e22058f32d27cd3207a55e58259d484149749
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, also contains the same redirector URL. This indicates a deliberate attempt to lure users to malicious content, likely for phishing or malware delivery. The presence of a link farm and a malicious redirector strongly suggests a phishing or content-luring attack pattern.

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.cc/pify?keyword=cara++3d+warehouse+sketchup+2013
    • http://sijuz.cheepersbirding.com/uploads/1/3/1/3/131379808/8c239c0b060c.pdf
    • http://files.shawnsevario.com/uploads/1/3/0/7/130739170/6681101.pdf
    • https://cdn.shopify.com/s/files/1/0434/6619/5106/files/xubovokutu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9175/3115/files/balanceamento_quimico_9_ano.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/so_too_either_neither_konu_anlatm.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/basic_heat_and_mass_transfer_mills.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/kumolebevufivog.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6066/files/wirizuwolinerivibe.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/17272779067.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3336/files/2652276543.pdf
    • https://cdn.shopify.com/s/files/1/0438/8087/4139/files/totilav.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/gebakarebowoluluvedatof.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007da1.bin
8c2ed80eb74eb0eef65e7a439d49d52df3749359740500e91948c48157ffa4d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA1 5680 bytes
font_01_sfnt_off00009104.bin
5872976014723e3e76c912267cd6b24d0401635a39debf4ca1245c772da9b50e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9104 3268 bytes
font_02_sfnt_off00009e03.bin
bd5019c17b191d66849a85953ec3a2edf00d20a2d13931d3a3456042e48d1625		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E03 11496 bytes
font_03_sfnt_off0000c541.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC541 16312 bytes

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