PDF malware analysis — malicious · d855bde8e9e38d49

MALICIOUS

PDF

38.6 KB Created: 2020-08-05 05:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 037a9007d462b1cfcad92f7a818dfd7d SHA-1: e7f3584c2543fad9e23bb2f1df6c071ccb8357fc SHA-256: d855bde8e9e38d496f549761fa4d6313a40037c30427f12d260a4617ae3782e8

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=convertir+de+pdf+a+word+reconocimiento+de+texto+ocr%2529, which is likely used to funnel victims to further malicious content. The document body itself is largely unreadable binary data, but the embedded links are the primary vector for attack.

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=convertir+de+pdf+a+word+reconocimiento+de+texto+ocr%2529
- http://files.lindaepix.com/uploads/1/3/1/3/131379110/73d3ec673c62ca8.pdf
- http://files.meditationwithmish.com/uploads/1/3/1/4/131437443/junigib.pdf
- http://kekod.perkinstherapygroup.com/uploads/1/3/1/4/131454012/tunumexirilevoxoka.pdf
- https://cdn.shopify.com/s/files/1/0427/5588/3175/files/40077223805.pdf
- https://cdn.shopify.com/s/files/1/0429/8578/3455/files/vunekapexibunirawo.pdf
- https://cdn.shopify.com/s/files/1/0431/9064/8996/files/kixomumid.pdf
- https://cdn.shopify.com/s/files/1/0431/6259/9586/files/11930883880.pdf
- https://cdn.shopify.com/s/files/1/0434/6786/6265/files/xesilufivodo.pdf
- https://cdn.shopify.com/s/files/1/0434/5122/0120/files/66947347659.pdf
- https://cdn.shopify.com/s/files/1/0428/0451/0887/files/94323690531.pdf
- https://cdn.shopify.com/s/files/1/0431/8196/5461/files/mla_format_outline.pdf
- https://cdn.shopify.com/s/files/1/0440/6837/2632/files/95054589421.pdf
- https://cdn.shopify.com/s/files/1/0437/1388/8424/files/64945171148.pdf
- https://cdn.shopify.com/s/files/1/0435/1721/4874/files/31699705672.pdf
- https://cdn.shopify.com/s/files/1/0430/3863/8241/files/norafowu.pdf
- https://cdn.shopify.com/s/files/1/0431/0846/6845/files/88134222421.pdf
- https://cdn.shopify.com/s/files/1/0428/6241/1942/files/zozolejuru.pdf
- https://cdn.shopify.com/s/files/1/0432/5575/9011/files/78658903846.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_off000054d4.bin` `8f60bfd7436d275daccfa7e5d1c4472faf024319264dea2a592a3492dac215fc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54D4	5292 bytes
`font_01_sfnt_off000066e4.bin` `096bbfcec9ae0d6cff120398d057ce7cc860723e8f405e19cb84a3e0db212454`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66E4	11184 bytes

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