PDF malware analysis — malicious · 934fde7dd71ee8b1

MALICIOUS

PDF

41.6 KB Created: 2020-08-11 13:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ba8b9216efaf2f1ddfc46d64023b05be SHA-1: 8b13158ac84a59c3f433ce137a21a4a49f8b71ed SHA-256: 934fde7dd71ee8b113a4ba6048ea75b3cac16643964327e347eab64cda953bcb

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to redirector infrastructure or are part of a link farm designed to manipulate search engine results. The primary malicious link identified is https://ttraff.ru/pify?keyword=concepto+de+actitud+pdf, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify and other domains, suggesting a coordinated effort to drive traffic to potentially harmful sites.

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=concepto+de+actitud+pdf
- http://files.debattierclub-muenchen.de/uploads/1/3/2/6/132680905/bapetaravav-gisugetem-dunadovidekon.pdf
- http://rigesu.natesawyercounseling.com/uploads/1/3/2/6/132681464/jujosafaw.pdf
- http://files.rpcrentals.com/uploads/1/3/0/7/130775102/7770618.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
- https://cdn.shopify.com/s/files/1/0437/7794/9848/files/lomituxexasamikipegusobim.pdf
- https://cdn.shopify.com/s/files/1/0428/5900/4070/files/dafigirulikaradiga.pdf
- https://cdn.shopify.com/s/files/1/0434/1579/7917/files/gegevejofakozelogexefape.pdf
- https://cdn.shopify.com/s/files/1/0430/6819/4978/files/97468155549.pdf
- https://cdn.shopify.com/s/files/1/0438/6727/5424/files/99181323895.pdf
- https://cdn.shopify.com/s/files/1/0451/9487/0935/files/10242443661.pdf
- https://cdn.shopify.com/s/files/1/0438/0485/2386/files/dont_trust_the_bitch_in_apartment_23.pdf
- https://cdn.shopify.com/s/files/1/0433/4557/6088/files/tudurunivogijebudoluni.pdf
- https://cdn.shopify.com/s/files/1/0427/7764/1116/files/sotusagematevenuduxime.pdf
- https://cdn.shopify.com/s/files/1/0429/7624/7967/files/83771363593.pdf
- https://cdn.shopify.com/s/files/1/0439/3975/8235/files/sacramento_da_ordem.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000064be.bin` `2f8ba56208f88f21aa70d2fdd84d354f3f140bc9b6c778da10afab6a1a93e31c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64BE	4748 bytes
`font_01_sfnt_off000074f7.bin` `c6e3a718da459b8b2462ade96454c550768e71fad225530b1d32af91384d3856`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x74F7	10812 bytes

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