PDF malware analysis — malicious · af1ad589e0eaebac

MALICIOUS

PDF

43.2 KB Created: 2020-08-20 00:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fb4229ca00308fde13ce135b574341d5 SHA-1: a24fe002cebd3bb9e152707611b54920b770cabc SHA-256: af1ad589e0eaebacdc1f2d32d473c3432bd9cd3f89761a2e1df4f594c81f4040

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The heuristic firings indicate this PDF is part of a link farm, likely designed to distribute malicious content or phish users. The primary malicious URL identified is https://ttraff.com/pify?keyword=bairavaa+movie+songs++kuttyweb.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=bairavaa+movie+songs++kuttyweb
- http://files.goldbergacademy.org/uploads/1/3/0/7/130740138/rusavigiwuxefuduz.pdf
- http://files.7lakesboatrentals.com/uploads/1/3/2/6/132681156/9664124.pdf
- https://cdn.shopify.com/s/files/1/0432/8914/9608/files/miwajuxabu.pdf
- https://cdn.shopify.com/s/files/1/0436/9724/2262/files/wekemigogojugezifas.pdf
- https://cdn.shopify.com/s/files/1/0428/7463/4403/files/8109720926.pdf
- https://cdn.shopify.com/s/files/1/0430/1501/2511/files/la_science_cabalistique.pdf
- https://cdn.shopify.com/s/files/1/0435/8697/7949/files/39451862224.pdf
- https://cdn.shopify.com/s/files/1/0433/0763/0747/files/52345642825.pdf
- https://cdn.shopify.com/s/files/1/0431/6754/7552/files/81460899889.pdf
- https://cdn.shopify.com/s/files/1/0431/7039/8368/files/78808223420.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nomevorijodasulalo.pdf
- https://cdn.shopify.com/s/files/1/0433/3119/0952/files/81923791776.pdf
- https://cdn.shopify.com/s/files/1/0433/5943/6951/files/larezi.pdf
- https://cdn.shopify.com/s/files/1/0439/4595/1400/files/topiwutalutilojomu.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_off00005d99.bin` `d0b32e823344ba65b05b33c0aee9a7ec9d423dc5b01c4c1c7335bf5a29348788`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D99	5480 bytes
`font_01_sfnt_off00007048.bin` `f201b44aa12495e49feaf874442dbf9d828335c855211b3bdc5d9ce9bbc8afd6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7048	14724 bytes

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