PDF malware analysis — malicious · 35c78cef2b098475

MALICIOUS

PDF

45.3 KB Created: 2020-08-18 20:28:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9c9ff878d6f0d43b7662e12f24cf9877 SHA-1: ec08b29b31e8ad066518d60002296e18d2ac9115 SHA-256: 35c78cef2b0984750eaeb5d029c674aa1da80f2b94c8da100a21fed75f8ea7b6

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a malicious redirector link disguised as an Apple user guide, which is a common lure for phishing or malware delivery. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link points to known malicious infrastructure. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the lure text and the malicious URL.

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=apple+user+guide+for+ipad+2
- http://josel.harmonyon2wheels.com/uploads/1/3/1/1/131164496/918bdfdad42.pdf
- http://files.clarevet.com/uploads/1/3/0/7/130738814/6baf8b64a8319.pdf
- http://files.iamsefo.com/uploads/1/3/0/8/130874329/witemarisibig_jimanozuduf_rujotisum_bunubitopuxowu.pdf
- https://cdn.shopify.com/s/files/1/0435/7446/0579/files/36521666708.pdf
- https://cdn.shopify.com/s/files/1/0432/4684/6107/files/21197394526.pdf
- https://cdn.shopify.com/s/files/1/0436/7931/8166/files/personal_statement_for_university_sample.pdf
- https://cdn.shopify.com/s/files/1/0433/7877/0076/files/86012152415.pdf
- https://cdn.shopify.com/s/files/1/0429/1716/7267/files/87297794321.pdf
- https://cdn.shopify.com/s/files/1/0435/5283/3695/files/pejuda.pdf
- https://cdn.shopify.com/s/files/1/0436/8711/6965/files/88071091663.pdf
- https://cdn.shopify.com/s/files/1/0431/0669/7367/files/jukezifabegezupomaju.pdf
- https://cdn.shopify.com/s/files/1/0433/8361/9738/files/38635429066.pdf
- https://cdn.shopify.com/s/files/1/0432/4111/1716/files/18579925871.pdf
- https://cdn.shopify.com/s/files/1/0430/8199/0304/files/kixuwitedabote.pdf
- https://cdn.shopify.com/s/files/1/0434/1389/7372/files/belden_8760_cable.pdf
- https://cdn.shopify.com/s/files/1/0430/9201/7305/files/pelonenifofuwajejo.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000063c6.bin` `0be4ab2e7d7833078a33b281cc35ff2ae82eca2fc1f482d47d4e5d896d4862bf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63C6	5328 bytes
`font_01_sfnt_off000075ec.bin` `0b38f6fd5e0b54bfa22d5adee1cfe00629fe134100fc7cfc1ad14a2ab7974207`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75EC	6148 bytes
`font_02_sfnt_off000085cb.bin` `2d9f7f9616b7e8d84615aa5500f4b8c922035ba0f2e4d970f501546caf64fb89`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85CB	9884 bytes

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