PDF malware analysis — malicious · 466b29623aa46030

MALICIOUS

PDF

44.5 KB Created: 2020-07-29 02:55:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9c7ca1bb7a5836c92359d737d7c5dce4 SHA-1: 68636f0a2a9bfeacfe221409a6dc5b3032c32856 SHA-256: 466b29623aa460307149cb82f9d7cd37c6e5eaa391e861f2d2e2f2b4e8edad3a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of these links, ttraff.cc, is flagged as a malicious redirector. The document body is heavily obfuscated, but the presence of numerous external links suggests a phishing or SEO poisoning attempt to drive traffic to malicious sites.

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.cc/pify?keyword=helping+verbs+vs+linking+verbs+worksheet
- http://files.noordinarygames.com/uploads/1/3/0/8/130874474/wemera_pidojupurev_ladoxawuguv_duvotipasafefi.pdf
- http://files.amagier.com/uploads/1/3/2/6/132696067/93fe0.pdf
- http://files.jerichostem.com/uploads/1/3/0/9/130968956/8957783.pdf
- http://files.ladymaeimpressions.com/uploads/1/3/1/3/131398598/5005396.pdf
- http://files.thefilamentstudio.com/uploads/1/3/1/6/131606035/fakesijerisaz.pdf
- https://cdn.shopify.com/s/files/1/0432/5638/1597/files/murixesujizejalulojefuwa.pdf
- https://cdn.shopify.com/s/files/1/0430/5597/2501/files/94207254426.pdf
- https://cdn.shopify.com/s/files/1/0428/1604/5222/files/68988046420.pdf
- https://cdn.shopify.com/s/files/1/0441/0392/5912/files/dawedubinelixulovaxari.pdf
- https://cdn.shopify.com/s/files/1/0428/1411/1903/files/zibatefoti.pdf
- https://cdn.shopify.com/s/files/1/0428/3518/1724/files/87570010637.pdf
- https://cdn.shopify.com/s/files/1/0430/8389/0850/files/59439701177.pdf
- https://cdn.shopify.com/s/files/1/0432/1945/2063/files/zoxamejagemijemorugax.pdf
- https://cdn.shopify.com/s/files/1/0434/7930/2296/files/finadedobelesi.pdf
- https://cdn.shopify.com/s/files/1/0440/0427/8422/files/15427644152.pdf
- https://cdn.shopify.com/s/files/1/0431/3874/4476/files/46405814430.pdf
- https://cdn.shopify.com/s/files/1/0430/6314/8706/files/11009004276.pdf
- https://cdn.shopify.com/s/files/1/0435/3074/8055/files/kutugi.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/
- https://cdn.shopify.com/s/files/1/0428/1411

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000710b.bin` `2a6f03994905ed73cc547d94fab398d6a2c0784ec5e7d7f003ee88bca165c081`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x710B	4976 bytes
`font_01_sfnt_off000081fa.bin` `1b1d074ad3ca7c8343595b64d07de63f22f7a950c5536b39017ad24b9b79778e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81FA	10088 bytes

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