Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef78112b962a431…

MALICIOUS

PDF

102.6 KB Created: 2020-08-02 17:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c07a2e5e8bdb96a29e850471ce362350 SHA-1: b8183aadabc7956c8e7f7fcd03dbae7e1e379ecb SHA-256: cef78112b962a43174188c73d05f75e8e2d072188b910ab4fb3ad2ae709eeeff
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URL `https://ttraff.com/pify?keyword=hindi+item+songs` is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary purpose is to lure users to malicious sites. No scripts were extracted, limiting further analysis of execution chains.

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=hindi+item+songs
    • http://files.madetobellc.com/uploads/1/3/1/4/131452817/9ba22cf1e840382.pdf
    • http://files.pneuproject.org/uploads/1/3/1/4/131407892/9565820.pdf
    • http://files.virtualchip.com/uploads/1/3/1/3/131379540/pasutusuj.pdf
    • http://files.borninabarnminiatures.com/uploads/1/3/0/7/130775392/fe8ce4.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/42977358300.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8541/files/82288575391.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/docker_compose_comments.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/88986203903.pdf
    • https://cdn.shopify.com/s/files/1/0434/3663/8369/files/17704755938.pdf
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/47694194173.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/22817715838.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/10986258666.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/wovurezosigeravarametopu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2335/8358/files/62957489385.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4902/files/boniwatu.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_off00014dd5.bin
1b5c87b0b3fead2635367cdb5d7c7e576dd919724678c30639e8b4911340f4b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14DD5 4768 bytes
font_01_sfnt_off00015dfd.bin
3460aa6cf278310cbf8a6095906078f92b0c9d43e5e642d987f4e05bf39c1574		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15DFD 15412 bytes

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