PDF malware analysis — malicious · 8b6ea7e1c05d458f

MALICIOUS

PDF

135.8 KB Created: 2020-08-07 00:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a231f53d2a5a12eca0d31558a7dfec9c SHA-1: 1d62faafe73d7a40bb9641ea33459188c2ed4408 SHA-256: 8b6ea7e1c05d458f564574ab2a5487b059c39d42f4b9288d741509980adac116

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a malicious redirector designed to lure users into downloading content. The primary malicious URL, https://ttraff.com/pify?keyword=spotlights+on+anesthesia+pdf+free+download, is used to redirect users to potentially harmful content, disguised as a free download. The ML classifier strongly indicates malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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.com/pify?keyword=spotlights+on+anesthesia+pdf+free+download
- http://files.silveroceangroup.com/uploads/1/3/0/7/130740443/5345398.pdf
- http://files.harmonyhillshappyhorsehaven.org/uploads/1/3/1/3/131398555/xuwalawewubepude.pdf
- http://files.mikesmale.com/uploads/1/3/1/4/131437421/zavero.pdf
- https://cdn.shopify.com/s/files/1/0431/9854/6084/files/danelab.pdf
- https://cdn.shopify.com/s/files/1/0433/2450/6266/files/kilalonanopito.pdf
- https://cdn.shopify.com/s/files/1/0433/5442/3445/files/ledimupobojumuzitiweniviw.pdf
- https://cdn.shopify.com/s/files/1/0433/9856/1957/files/attitudes_to_language_reading.pdf
- https://cdn.shopify.com/s/files/1/0437/9947/8434/files/volidafifuseb.pdf
- https://cdn.shopify.com/s/files/1/0435/8874/7423/files/windows_8._1_cracks.pdf
- https://cdn.shopify.com/s/files/1/0433/4511/7342/files/sesutuvudagem.pdf
- https://cdn.shopify.com/s/files/1/0432/7224/1310/files/20490189738.pdf
- https://cdn.shopify.com/s/files/1/0428/0942/6079/files/41978333840.pdf
- https://cdn.shopify.com/s/files/1/0431/5404/7137/files/fraction_decimal_percent_chart.pdf
- https://cdn.shopify.com/s/files/1/0434/3994/7932/files/9063986568.pdf
- https://cdn.shopify.com/s/files/1/0433/8506/1541/files/30496351218.pdf
- https://cdn.shopify.com/s/files/1/0431/5830/6965/files/97145899238.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_off0001b62b.bin` `772f72b262be22db3d7cd406ce90cdb1a73f87e2c9a361a91be501292026a824`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1B62B	5500 bytes
`font_01_sfnt_off0001c8e9.bin` `a141d5a083ad20d7f56fa551e726ccc34604fb126f304db3d10d07f95bf5a570`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1C8E9	16216 bytes
`font_02_sfnt_off0001fbd1.bin` `74a35dcac671789a1952909c7064e8f0092ccf84988030a41650584fa1b75142`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1FBD1	16192 bytes

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