PDF malware analysis — malicious · c2c19191ad667a74

MALICIOUS

PDF

47.9 KB Created: 2020-08-04 10:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b5c0d43e78a18c975c64668e67b39c13 SHA-1: 337025ffedc72b9c0054512e6963d0cc3ba49158 SHA-256: c2c19191ad667a74edee2af605c894c648705f38eece6a60a75389ab73414e96

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests a link farm or SEO poisoning tactic 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=hidradenitis+suppurativa+nhs+pdf
- http://files.awaveofhealthymeals.com/uploads/1/3/0/7/130738801/nepunewuduw_bidupowuvaz_pipifedugi_tavotexe.pdf
- http://files.crossroadscowboy.com/uploads/1/3/1/6/131606605/mudeguxojoxu-sinigafilefavuz-bagubulumirav.pdf
- http://puwax.graingercountytomatofestival.com/uploads/1/3/2/8/132814930/5126511.pdf
- http://files.hwy27yardsale.com/uploads/1/3/0/7/130775588/5ba189767a.pdf
- http://files.grandmaceilshouse.com/uploads/1/3/1/4/131408529/92347f03614c5.pdf
- https://cdn.shopify.com/s/files/1/0433/2313/0009/files/nys_contract_reporter.pdf
- https://cdn.shopify.com/s/files/1/0439/1347/8312/files/nozoguvonuzaxupux.pdf
- https://cdn.shopify.com/s/files/1/0432/8531/5737/files/vuzujomovot.pdf
- https://cdn.shopify.com/s/files/1/0430/2379/4337/files/95323393735.pdf
- https://cdn.shopify.com/s/files/1/0431/0096/2977/files/39521774067.pdf
- https://cdn.shopify.com/s/files/1/0433/5131/0488/files/39510823691.pdf
- https://cdn.shopify.com/s/files/1/0435/3022/3775/files/lazekemedisutelos.pdf
- https://cdn.shopify.com/s/files/1/0428/4832/1692/files/gifibujarogegorotelaja.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdf
- https://cdn.shopify.com/s/files/1/0434/3853/8904/files/87795491405.pdf
- https://cdn.shopify.com/s/files/1/0437/5383/2609/files/practice_it_answers_bjp4_self-_check.pdf
- https://cdn.shopify.com/s/files/1/0433/7329/7822/files/zisevimuwusegeje.pdf
- https://cdn.shopify.com/s/files/1/0434/1966/4541/files/rejoluzeledadeneridaweko.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_off00007c44.bin` `cdd91c8c5b41d15434d9f43dc879fb3ad32953759f3a4ea35aa0de1d8ed93dba`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C44	5120 bytes
`font_01_sfnt_off00008db0.bin` `8c60c1877f7c6f16d576c93a868a2fb1ff91fdb2a5f3301d39b45788014fd62c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DB0	10168 bytes

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