PDF malware analysis — malicious · 4dbe71618621fb9c

MALICIOUS

PDF

46.7 KB Created: 2020-08-02 14:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c42212a00231f6d46abb8ca22a0efe6a SHA-1: 30c62e83f59fb31720b6004650f7a41b522af236 SHA-256: 4dbe71618621fb9c6d781d07cc550b3e9725a872772e7c0063bb4b73e7d37c6c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru', which is likely the primary malicious payload delivery mechanism. The ML classifier strongly supports the malicious nature of this PDF.

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=the+accidental+tourist+pdf
- http://files.fromthebottom2thetop.com/uploads/1/3/2/7/132710780/miwevuvokebis.pdf
- http://files.wooddynamics.net/uploads/1/3/2/8/132814906/benanuga.pdf
- http://files.limassolsportsmassage.com/uploads/1/3/0/8/130874129/laxuvovobopekidom.pdf
- http://files.srinagarhotel.net/uploads/1/3/1/4/131483275/nediwoterobaxukizak.pdf
- http://files.carolinefreudenthal.com/uploads/1/3/1/6/131637374/pogetiwenufif-fikasorerezulal-rifubiwuvapufi-tuliretejozibux.pdf
- https://cdn.shopify.com/s/files/1/0432/2390/8520/files/76401416363.pdf
- https://cdn.shopify.com/s/files/1/0431/1423/4016/files/bipisifurovowuragu.pdf
- https://cdn.shopify.com/s/files/1/0427/9681/0396/files/sixapuxinisoponexa.pdf
- https://cdn.shopify.com/s/files/1/0435/4896/7061/files/litivafaveragisifikute.pdf
- https://cdn.shopify.com/s/files/1/0435/5633/9861/files/60140835134.pdf
- https://cdn.shopify.com/s/files/1/0438/0796/5341/files/83815082915.pdf
- https://cdn.shopify.com/s/files/1/0434/5656/1318/files/poduw.pdf
- https://cdn.shopify.com/s/files/1/0434/5475/9065/files/savemefip.pdf
- https://cdn.shopify.com/s/files/1/0429/6710/5687/files/wuzekosa.pdf
- https://cdn.shopify.com/s/files/1/0431/3851/5095/files/fiwanivogukerimilitelur.pdf
- https://cdn.shopify.com/s/files/1/0436/2970/7422/files/88095761659.pdf
- https://cdn.shopify.com/s/files/1/0435/6934/8763/files/livosamuri.pdf
- https://cdn.shopify.com/s/files/1/0428/7361/8599/files/37220107556.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_off00006c42.bin` `351161ad198f3986d9054139862ee9f351d8e57a971e6ed0528cce44225f823a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C42	5192 bytes
`font_01_sfnt_off00007de1.bin` `7232a016ba90321945c360714188220c78425898f3381b94da94e995e1f65c16`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DE1	14840 bytes

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