PDF malware analysis — malicious · d616dddaaed1604b

MALICIOUS

PDF

65.0 KB Created: 2020-07-26 05:16:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8f63457e49c5b9290258d0ca2276c828 SHA-1: a3b5172f23f7bc6d1c4d6602c8bf434e49b004b3 SHA-256: d616dddaaed1604ba4048fb3c8aafd033382b6733e85abc6c662e369bbe6b5dc

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to distribute traffic to malicious sites. One prominent URL, 'https://ttraff.ru/pify?keyword=electrochemistry+important+questions+and+answers', is flagged as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'electrochemistry important questions and answers'. The heuristics indicate the PDF is a malicious redirector and part of a link farm.

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=electrochemistry+important+questions+and+answers
- http://files.womanbloom.org/uploads/1/3/1/3/131380308/faruperivew.pdf
- http://files.lifesabeautifulmess.com/uploads/1/3/0/7/130775888/09ad748cf90.pdf
- http://files.quantelab.org/uploads/1/3/0/7/130776167/zakegarovowedaj.pdf
- https://cdn.shopify.com/s/files/1/0432/4016/1435/files/lujurujulapuwiba.pdf
- https://cdn.shopify.com/s/files/1/0429/2159/0951/files/79840233496.pdf
- https://cdn.shopify.com/s/files/1/0429/9459/8047/files/vagesijinemodogebexar.pdf
- https://cdn.shopify.com/s/files/1/0431/7731/2405/files/tesiv.pdf
- https://cdn.shopify.com/s/files/1/0434/7179/8436/files/16197174181.pdf
- https://cdn.shopify.com/s/files/1/0430/8808/5143/files/jovevumozupebeb.pdf
- https://cdn.shopify.com/s/files/1/0427/5296/6812/files/nulagab.pdf
- https://cdn.shopify.com/s/files/1/0433/5871/6054/files/dizirunobelodesixiwude.pdf
- https://cdn.shopify.com/s/files/1/0427/7967/2735/files/24850855630.pdf
- https://cdn.shopify.com/s/files/1/0429/1490/6275/files/91558624146.pdf
- https://cdn.shopify.com/s/files/1/0431/4536/3610/files/muwexesawejemopijaxaxa.pdf
- https://cdn.shopify.com/s/files/1/0431/0705/7825/files/54974006552.pdf
- https://cdn.shopify.com/s/files/1/0437/1709/9685/files/61623824757.pdf
- https://cdn.shopify.com/s/files/1/0432/9324/5590/files/44269797749.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_off0000be9d.bin` `b353f7f298fc4b5955ae3d5f920feb3d6ba05469cec86f4481d8ab64b8426b46`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBE9D	5472 bytes
`font_01_sfnt_off0000d11a.bin` `7c8d7c74f00e8a08ab6bcc0ddda32f1d7fbd62f89b44b077b471fd04ef4e88e3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD11A	10856 bytes

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