PDF malware analysis — malicious · 527dcadd59663f8f

MALICIOUS

PDF

48.3 KB Created: 2020-08-02 16:39:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a14901c9b46984c537a4496496ab5b44 SHA-1: d23813a27775631f7a247e7cd7cf8e3efc9514e0 SHA-256: 527dcadd59663f8f720cb248aada3933e81ffc5a7189529a6eb08cbc6d3a56b4

150 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, specifically pointing to 'https://ttraff.ru/pify?keyword=levi+league+of+legends'. This URL is likely part of a phishing or scam campaign, attempting to lure users with a seemingly relevant keyword. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, suggesting an attempt to obscure the malicious destination or distribute content. The ML classifier also strongly indicated maliciousness.

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=levi+league+of+legends
- http://files.uabiochemistryclub.com/uploads/1/3/1/4/131438013/4891274.pdf
- http://files.highgrundoncottages.com/uploads/1/3/1/0/131071249/4f9a6b.pdf
- http://files.joanadler.com/uploads/1/3/1/1/131163601/dutelaroboluf.pdf
- https://cdn.shopify.com/s/files/1/0433/8951/7973/files/bopajadasuwenewezuxon.pdf
- https://cdn.shopify.com/s/files/1/0427/7462/6470/files/64539844712.pdf
- https://cdn.shopify.com/s/files/1/0437/4547/6762/files/rixalowotegisimomimujebi.pdf
- https://cdn.shopify.com/s/files/1/0432/8439/8236/files/48784623615.pdf
- https://cdn.shopify.com/s/files/1/0432/5530/0249/files/75154349034.pdf
- https://cdn.shopify.com/s/files/1/0428/3957/2643/files/46833423195.pdf
- https://cdn.shopify.com/s/files/1/0433/5042/5750/files/96010457324.pdf
- https://cdn.shopify.com/s/files/1/0437/4154/4599/files/changeling_the_lost_contracts.pdf
- https://cdn.shopify.com/s/files/1/0431/5889/6802/files/58625991266.pdf
- https://cdn.shopify.com/s/files/1/0428/8688/9639/files/47562659832.pdf
- https://cdn.shopify.com/s/files/1/0430/4506/0762/files/64032503163.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13534048661.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_off000067ed.bin` `ac37e8ba1d54c0f62323425ae359b28f00e9da0b00900268267a42273766c904`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67ED	4980 bytes
`font_01_sfnt_off00007904.bin` `41b452cc242f084dcff6ea70fa16a3facb1404b3f6eafbc2e4178bc4515257c5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7904	10792 bytes
`font_02_sfnt_off00009ddc.bin` `8a483a387f3528d14a2f00f09054886c589ec6b564ec5b76e5e1b3cb137045ac`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9DDC	16064 bytes

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