PDF malware analysis — malicious · d5ab0ccc9b3f7c25

MALICIOUS

PDF

50.3 KB Created: 2020-08-24 06:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a235ff0139ac45d10d1998950ae436ab SHA-1: 2ce78353ebfec229cb76e3505b7b308b0d7ce02b SHA-256: d5ab0ccc9b3f7c25647249e3416a69098d5fe3b37eb99a02278aa17471398975

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=aarti+kunj+bihari+ki+song+lyrics+pdf, which is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to the song lyrics and the PDF creation tool, suggesting a lure to disguise the malicious links.

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.ru/pify?keyword=aarti+kunj+bihari+ki+song+lyrics+pdf
- http://files.wmchsprojectgraduation.com/uploads/1/3/0/9/130969218/4f79580fee549.pdf
- http://monig.unismunc.org/uploads/1/3/0/8/130814328/3041464.pdf
- https://cdn.shopify.com/s/files/1/0431/0702/5056/files/accounting_study_guide.pdf
- https://cdn.shopify.com/s/files/1/0430/9437/6605/files/zibulumu.pdf
- https://cdn.shopify.com/s/files/1/0428/3380/5471/files/71669706194.pdf
- https://cdn.shopify.com/s/files/1/0431/8491/4583/files/81247860287.pdf
- https://cdn.shopify.com/s/files/1/0432/0254/3778/files/zowubeluleliximu.pdf
- https://cdn.shopify.com/s/files/1/0431/1167/8114/files/53400375954.pdf
- https://cdn.shopify.com/s/files/1/0432/3917/8399/files/37742645691.pdf
- https://cdn.shopify.com/s/files/1/0429/8843/7655/files/suxuxalafup.pdf
- https://cdn.shopify.com/s/files/1/0432/0316/6369/files/76921199914.pdf
- https://cdn.shopify.com/s/files/1/0431/1557/7504/files/79915265891.pdf
- https://cdn.shopify.com/s/files/1/0434/1828/8284/files/foxit_editor_free_download.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000620f.bin` `0a8a89562606078b831954b4b502dfbb6fe0024c78e7b4b4b2cac9b83b280b1c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x620F	5788 bytes
`font_01_sfnt_off000075be.bin` `e2c7bb3c6d2fbc6b9680c858ce58af9e5cd0e4fbc18f33bdd2ad1d5654d08a87`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75BE	3772 bytes
`font_02_sfnt_off00008161.bin` `c4b9349c90b66f37b9072a5afa1b48c2dd25d3a753cbf72b04ae28728ea65bdb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8161	9700 bytes
`font_03_sfnt_off0000a2da.bin` `81dc231463801b31930b21033ae4fe5ed4f21db83dd9d2840d8e71d9c9b5df91`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA2DA	7304 bytes

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