PDF malware analysis — malicious · 9ae1c4c7639915c6

MALICIOUS

PDF

41.9 KB Created: 2020-08-14 14:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b074dd1aef0a18811672e64883c07ec6 SHA-1: 173ba4da45704dad96f686ba864db2486704c5e7 SHA-256: 9ae1c4c7639915c60b9d354aecbf994316747f54c418497bdcb8611f9bc8ff47

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.ru/pify?keyword=violet+butterfly+pictures+free. The document body, though heavily obfuscated, contains this URL and other links, suggesting a social engineering lure. The ML classifier strongly supports the malicious verdict.

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=violet+butterfly+pictures+free
- http://benadar.thelittlethingsilove.com/uploads/1/3/2/7/132740424/topivikisuzok.pdf
- http://panotaz.donwilsonodhiambo.com/uploads/1/3/0/8/130874431/tiwudes.pdf
- http://files.myconcordpharmacy.com/uploads/1/3/1/6/131637806/dumimig.pdf
- http://files.dipconcaribbean.com/uploads/1/3/1/1/131164198/seloko-xolaxiba-zarujesizi.pdf
- http://files.legacyhorselogging.com/uploads/1/3/1/6/131636990/rakofidi-tuxujojaxeki.pdf
- https://cdn.shopify.com/s/files/1/0431/6862/8892/files/95431571642.pdf
- https://cdn.shopify.com/s/files/1/0434/2834/8060/files/77648213605.pdf
- https://cdn.shopify.com/s/files/1/0436/6857/0265/files/definition_of_crime_scene.pdf
- https://cdn.shopify.com/s/files/1/0429/8863/4263/files/68223097820.pdf
- https://cdn.shopify.com/s/files/1/0433/7103/6835/files/bilivowakunukadit.pdf
- https://cdn.shopify.com/s/files/1/0433/1339/7924/files/kujitoguwasaxutoruganumi.pdf
- https://cdn.shopify.com/s/files/1/0439/6145/0654/files/paper_chromatography_lab_report.pdf
- https://cdn.shopify.com/s/files/1/0438/0524/5597/files/bratstvo_crnog_bodea_20.pdf
- https://cdn.shopify.com/s/files/1/0433/0592/6809/files/bakunajidakolizeridod.pdf
- https://cdn.shopify.com/s/files/1/0427/8022/9791/files/validity_in_research_methodology.pdf
- https://cdn.shopify.com/s/files/1/0433/3538/5243/files/beniduxina.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_off000067bb.bin` `fe8340cc53e2f1448af8fd39d7e527875f4431a90e4d3fb8c81c6673237eb41e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67BB	5008 bytes
`font_01_sfnt_off000078e1.bin` `6e67f0747175a32c0b5742f5dbdee5f4de88031dc81d5d55c6f1c475cdad1a7b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78E1	9932 bytes

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