PDF malware analysis — malicious · 58fa17cff6053336

MALICIOUS

PDF

47.7 KB Created: 2020-07-27 17:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fe9b580f1013b2a0999469c1ce906f69 SHA-1: deca3bfbef3b3e8abfea6581390be777d64f7e76 SHA-256: 58fa17cff6053336940901588f929a56c8ba7d21ae33cb593ae236bb86287ed9

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to PDFs hosted on cdn.shopify.com. The document body, though heavily obfuscated, suggests a lure related to 'math worksheets'. The combination of these factors indicates a phishing attempt designed to redirect users to malicious infrastructure.

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/wb?keyword=math%20worksheets%20go%20solving%20quadratic%20equations%20by%20factoring
- http://files.stcharlespilgrimages.com/uploads/1/3/2/6/132682329/tuwov_gibugenodisok.pdf
- http://files.abackrubco.com/uploads/1/3/1/3/131381540/3290d47cec4056e.pdf
- http://files.artandseekforkids.com/uploads/1/3/2/7/132710791/6521078.pdf
- http://files.bridgendrailwayclub.co.uk/uploads/1/3/2/8/132814427/78be89c76dad2.pdf
- https://cdn.shopify.com/s/files/1/0434/0187/1512/files/medagizulelu.pdf
- https://cdn.shopify.com/s/files/1/0433/9970/8821/files/gagivadagogadimopemusasa.pdf
- https://cdn.shopify.com/s/files/1/0433/4957/3784/files/sepiluxipodifofupediwu.pdf
- https://cdn.shopify.com/s/files/1/0438/2441/4882/files/rijigokogawumakizifesuxem.pdf
- https://cdn.shopify.com/s/files/1/0434/2143/4005/files/guzikijelovezavazawokalel.pdf
- https://cdn.shopify.com/s/files/1/0437/3122/2677/files/49866709229.pdf
- https://cdn.shopify.com/s/files/1/0440/8826/2821/files/41812074807.pdf
- https://cdn.shopify.com/s/files/1/0432/2626/7806/files/57405169483.pdf
- https://cdn.shopify.com/s/files/1/0434/9257/3336/files/dapuwawijuzenulimefitoxor.pdf
- https://cdn.shopify.com/s/files/1/0431/9094/3902/files/pulogesotebo.pdf
- https://cdn.shopify.com/s/files/1/0431/8865/0142/files/17389625304.pdf
- https://cdn.shopify.com/s/files/1/0437/5838/7349/files/luxunagimenakon.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75904593322.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_off00007ac5.bin` `7cb28ad17a6266c4076603b73c69b046a31a6d0b7692a753f137a8ba93ce62e0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AC5	5756 bytes
`font_01_sfnt_off00008e70.bin` `872fc84f09b9497e6c81d99fa915652e3306d14cc8823f6757eb2e93a63bffdf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E70	10256 bytes

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