PDF malware analysis — malicious · ff3a1b3ca90f5a6e

MALICIOUS

PDF

51.3 KB Created: 2020-08-17 05:36:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7e8aafa157e89be940ac78cafe40a064 SHA-1: be31f6b876b69b2e65d8d4e07f985a4e163e56ed SHA-256: ff3a1b3ca90f5a6e8c30dbd97dc764864d3279f5dbe0528d0dc16079350f6044

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, including one pointing to a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, contains text related to 'cardiac tamponade pdf' and references the wkhtmltopdf tool, suggesting a lure document. The presence of multiple Shopify-hosted PDF links indicates a potential link farm for SEO poisoning or to obscure the ultimate destination. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack.

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=cardiac+tamponade+pdf
- http://files.mountainshadowfarm.ca/uploads/1/3/0/7/130738720/6843000.pdf
- http://zediraki.mrmowerdirect.com/uploads/1/3/1/4/131482975/sajajalutarozoloze.pdf
- http://pumute.cairngormsnaturalburials.co.uk/uploads/1/3/1/8/131857054/velolujegura.pdf
- http://files.marianchoraltuam.com/uploads/1/3/1/0/131070561/4436642.pdf
- https://cdn.shopify.com/s/files/1/0437/2611/0888/files/vasilipexevokulizuk.pdf
- https://cdn.shopify.com/s/files/1/0427/6640/1692/files/37671972124.pdf
- https://cdn.shopify.com/s/files/1/0437/6510/4791/files/vatukowakiz.pdf
- https://cdn.shopify.com/s/files/1/0431/7410/1160/files/nibekug.pdf
- https://cdn.shopify.com/s/files/1/0431/1895/2612/files/fepakadenak.pdf
- https://cdn.shopify.com/s/files/1/0439/8232/3870/files/36791534610.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pejuzesuloroxutebed.pdf
- https://cdn.shopify.com/s/files/1/0440/8626/3960/files/wi_fi_sync_iphone.pdf
- https://cdn.shopify.com/s/files/1/0431/7695/1965/files/13104228170.pdf
- https://cdn.shopify.com/s/files/1/0449/8187/8942/files/bixi_map_montreal.pdf
- https://cdn.shopify.com/s/files/1/0436/9098/3574/files/42393686224.pdf
- https://cdn.shopify.com/s/files/1/0437/7041/3207/files/fulakalekejozijodujiw.pdf
- https://cdn.shopify.com/s/files/1/0428/6503/3383/files/kusanevasulupizowor.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_off00008bc5.bin` `cb89da043e723bc89a584b39e4d46f917bae616510b013bb41e03b6b2c76a69d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BC5	4996 bytes
`font_01_sfnt_off00009cb2.bin` `52d5a5678fce5f09587c7eafa36d6249e00091146e2fec82c539472fed9dc52f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9CB2	10576 bytes

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