PDF malware analysis — malicious · 29960a901a18fbee

MALICIOUS

PDF

51.9 KB Created: 2020-08-09 13:08:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9bce979abb3748bc48593b20a7c042fa SHA-1: 51ba75f124d43f3d870ea1fe11ab05ebdca619b9 SHA-256: 29960a901a18fbee7e7c1f3712ac55c8246a970c01e0fa762069b983695af7cc

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on various domains, including a known malicious redirector at ttraff.ru. This suggests a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. 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=journaux+algeriens+pdf+gratuit
- http://tazet.troop76losaltos.org/uploads/1/3/1/3/131379578/9198080.pdf
- http://wugefopi.lacedwingdesigns.com/uploads/1/3/0/7/130775320/wajajuziz-zawakarunufobu.pdf
- http://files.emilymorrison.net/uploads/1/3/1/6/131637635/8d0c30a595c37b.pdf
- https://cdn.shopify.com/s/files/1/0427/4018/7303/files/72362413112.pdf
- https://cdn.shopify.com/s/files/1/0435/3651/5224/files/sistema_nervioso_vegetativo_concepto.pdf
- https://cdn.shopify.com/s/files/1/0427/6230/5702/files/vefurojijamekusu.pdf
- https://cdn.shopify.com/s/files/1/0430/6396/7906/files/63949175253.pdf
- https://cdn.shopify.com/s/files/1/0428/9419/6902/files/80154575775.pdf
- https://cdn.shopify.com/s/files/1/0437/9151/5805/files/lacrosse_craigslist_org.pdf
- https://cdn.shopify.com/s/files/1/0429/9672/7957/files/rewatarawipijifi.pdf
- https://cdn.shopify.com/s/files/1/0430/7622/3129/files/xifipugufefex.pdf
- https://cdn.shopify.com/s/files/1/0435/1574/0314/files/javascript_snake_code.pdf
- https://cdn.shopify.com/s/files/1/0434/6953/7432/files/favavazijijigibe.pdf
- https://cdn.shopify.com/s/files/1/0432/2990/5058/files/fawukeda.pdf
- https://cdn.shopify.com/s/files/1/0434/4594/4481/files/rorovonejebigemubekew.pdf
- https://cdn.shopify.com/s/files/1/0440/4989/1478/files/all_my_loving_tab.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_off00007bcc.bin` `83fcbc66f0b40bef0b02348f99bd863fa4f39d530a93f4246b5ac63acc33697e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BCC	5148 bytes
`font_01_sfnt_off00008d64.bin` `3fdfbac4a7482c99453ac755fb98498f26aac7a84910ede27a703e1c7febb810`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D64	11956 bytes
`font_02_sfnt_off0000b305.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB305	4324 bytes

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