PDF malware analysis — malicious · d65d5ff669babc44

MALICIOUS

PDF

59.2 KB Created: 2020-07-29 23:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 04cc5388e81f0b62a6591f94b6d7f80c SHA-1: 6d7194584ed23c7fe5ed298f0fc2351331eb113b SHA-256: d65d5ff669babc4499d040c59c63c2fcad892c5e464595ba219d7ce43ab4d935

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=accounting+ratios+class+12+questions+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of numerous external PDF links also suggests a link farm or SEO poisoning tactic. The ML classifier strongly supports the malicious nature of this PDF.

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=accounting+ratios+class+12+questions+pdf
- http://files.iriefire.co.uk/uploads/1/3/1/0/131071114/rowade.pdf
- http://files.mudgleyholidayhouse.com/uploads/1/3/1/4/131453650/ba273df1.pdf
- http://files.emmanuelcrespoartworks.com/uploads/1/3/2/6/132695213/sotafipuletabamuki.pdf
- https://cdn.shopify.com/s/files/1/0433/6353/2951/files/78771829481.pdf
- https://cdn.shopify.com/s/files/1/0429/6422/2101/files/zaxufipukikexadaner.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdf
- https://cdn.shopify.com/s/files/1/0434/7055/3250/files/tajew.pdf
- https://cdn.shopify.com/s/files/1/0428/0962/2687/files/devazojevafaxage.pdf
- https://cdn.shopify.com/s/files/1/0433/0189/6347/files/64050893546.pdf
- https://cdn.shopify.com/s/files/1/0433/6340/1877/files/99757088248.pdf
- https://cdn.shopify.com/s/files/1/0431/4542/9160/files/zederaxa.pdf
- https://cdn.shopify.com/s/files/1/0433/9702/1854/files/24660988093.pdf
- https://cdn.shopify.com/s/files/1/0431/6807/1836/files/givinavub.pdf
- https://cdn.shopify.com/s/files/1/0429/8866/7039/files/daxinotosorivowobamapimon.pdf
- https://cdn.shopify.com/s/files/1/0435/0961/2712/files/75932477535.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/1/0428/0962/2687/f

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000093e1.bin` `bb0bab478cecf7f0914894d164cba0e7a8d97dc9d91a20f8e6191deb7f8b78de`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93E1	5504 bytes
`font_01_sfnt_off0000a6a0.bin` `aba967c9c604d86b78ee1c4802cb909f8c39c09f0063e089c88abaccfe371f72`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA6A0	10376 bytes
`font_02_sfnt_off0000ca15.bin` `ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA15	16164 bytes

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