Malicious PDF — malware analysis report

Static analysis result for SHA-256 46f7888b9442d555…

MALICIOUS

PDF

49.5 KB Created: 2020-08-10 19:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b39c3f8a8dd3b5e7348335551293d3f2 SHA-1: 7afa80705b45b53dd2fd97634ee4a056d5e99f0c SHA-256: 46f7888b9442d5554fabb3320369e0b2ae309f5b03fc0ba33a83df2437e49b68
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text referencing 'cdisc sdtm implementation guide version 3. 2 pdf' and a URL pointing to 'ttraff.com', which is flagged as a malicious redirector. This suggests the document's primary purpose is to trick users into visiting a malicious site via a deceptive link.

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=cdisc+sdtm+implementation+guide+version+3.+2+pdf
    • http://files.bondosaka.com/uploads/1/3/1/6/131606289/jotikomut.pdf
    • http://medixad.artsxtra.com/uploads/1/3/2/7/132712323/8032583.pdf
    • http://files.thesolidrockshop.com/uploads/1/3/0/8/130813797/zaxisufibuxuxigusi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5671/6183/files/bukowikasipivajezazox.pdf
    • https://cdn.shopify.com/s/files/1/0434/3663/8369/files/73619936195.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/mukuxelipakinotugevu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/mefetugegemidavinejusum.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6315/files/fowojiwizosapalis.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/buribijefejo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2243/files/tabapudafujijo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/20671101841.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/wakuxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6647/files/dejele.pdf
    • https://cdn.shopify.com/s/files/1/0450/6599/4392/files/63264038128.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007483.bin
8e6ca3c876d0e72c6550fd1889d12eabf7ed21ff76bfa5df69dee7a3d2d1ede0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7483 5768 bytes
font_01_sfnt_off0000881e.bin
5f54ca238d9db014e7109fa1db7a65f5d429c21720c6585b5c54a8409d9a0bf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x881E 10160 bytes
font_02_sfnt_off0000aada.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAADA 4324 bytes

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