PDF malware analysis — malicious · e80d90023836760a

MALICIOUS

PDF

40.2 KB Created: 2020-07-27 05:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0129b7ca9ad485dd604666bc4b131968 SHA-1: 5faa8f383b660bebc4163390491c9b499e6eca20 SHA-256: e80d90023836760ac01c3c1aaac71037f54a133a95f14d47b609520636afcc92

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, a common tactic for SEO poisoning and redirecting users to malicious sites. One of the primary links points to a known malicious redirector, ttraff.ru, which is disguised as a search result for piano sheet music. The ML classifier also strongly indicated maliciousness.

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=ballade+in+g+minor+piano+sheet
- http://files.college-elf.com/uploads/1/3/1/4/131407051/nafife.pdf
- http://files.hollylima.com/uploads/1/3/0/7/130740517/ead3d1f11d2.pdf
- http://files.romancewaiheke.co.nz/uploads/1/3/1/4/131484133/4526697.pdf
- http://files.chopinsocietyofhouston.org/uploads/1/3/2/7/132741064/kirinefawororowe.pdf
- http://files.highgearcoaching.com/uploads/1/3/1/3/131383514/4b1c5.pdf
- https://cdn.shopify.com/s/files/1/0428/3446/0828/files/durifiziwugizugutuse.pdf
- https://cdn.shopify.com/s/files/1/0433/4285/6344/files/jotixiruwodobi.pdf
- https://cdn.shopify.com/s/files/1/0439/4283/8427/files/boxosajawuxoxageke.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdf
- https://cdn.shopify.com/s/files/1/0428/2476/1507/files/535035237.pdf
- https://cdn.shopify.com/s/files/1/0428/3554/2182/files/divopisugutowufezigu.pdf
- https://cdn.shopify.com/s/files/1/0431/3989/1357/files/86555835409.pdf
- https://cdn.shopify.com/s/files/1/0427/8085/2383/files/4663703139.pdf
- https://cdn.shopify.com/s/files/1/0433/3859/6511/files/61878075158.pdf
- https://cdn.shopify.com/s/files/1/0434/4722/2422/files/vokorirujobepugezud.pdf
- https://cdn.shopify.com/s/files/1/0432/4913/9880/files/50503885771.pdf
- https://cdn.shopify.com/s/files/1/0433/7346/1669/files/44133902402.pdf
- https://cdn.shopify.com/s/files/1/0432/7908/9824/files/sediwelija.pdf
- https://cdn.shopify.com/s/files/1/0431/7390/4545/files/jifibuwid.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/
- https://cdn.shopify.com/s/files/1/0428/2476/1

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005ad6.bin` `016b0576bc1e603ea41fe188fc742cf8c4fa1aa9346ec019e8048ac4ca68800d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5AD6	5208 bytes
`font_01_sfnt_off00006c4c.bin` `89d3b1602520fa7acc308c631c7e2dffca4de112ac53bc2eb9e78fd612f4a558`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C4C	12336 bytes

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