PDF malware analysis — malicious · 20fbdf72b4c9d32a

MALICIOUS

PDF

54.9 KB Created: 2020-08-06 03:32:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 96681a9ff007a40905bfebf12f2ab09e SHA-1: 0553624d9fe96d83fde56b08d439c08396cbe8f7 SHA-256: 20fbdf72b4c9d32ac4861e2008bc09293aa7e927e01f24b20ed294e8ce05cdcd

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a lure related to an Arduino manual, but the embedded link redirects to a known malicious domain. The heuristic firings indicate this is a malicious redirector and part of a link farm, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. No scripts were extracted, limiting the analysis of further stages.

Heuristics 4

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.
Remote-support tool lure high SE_REMOTE_SUPPORT_LURE

Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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=arduino+mega+2560+manual+espa%25C3%25B1ol+pdf
- http://files.funcde.com/uploads/1/3/1/0/131070982/5283331.pdf
- http://files.hannahbroderphoto.com/uploads/1/3/2/6/132695663/4334367.pdf
- http://files.oldcapitolumc.org/uploads/1/3/0/7/130776069/f3bd5e9a55a9c2.pdf
- http://tikezil.eagleyoungmarines.org/uploads/1/3/1/0/131069839/6216512.pdf
- https://cdn.shopify.com/s/files/1/0438/2117/0850/files/vesoduwemamuran.pdf
- https://cdn.shopify.com/s/files/1/0437/2643/8550/files/fefanepilumeruvakajaf.pdf
- https://cdn.shopify.com/s/files/1/0437/8217/6920/files/academic_ranking_of_world_universities_2020.pdf
- https://cdn.shopify.com/s/files/1/0431/5021/3274/files/47771156084.pdf
- https://cdn.shopify.com/s/files/1/0438/5318/5174/files/wavanex.pdf
- https://cdn.shopify.com/s/files/1/0431/5476/8021/files/94165665422.pdf
- https://cdn.shopify.com/s/files/1/0432/7247/0686/files/91037366787.pdf
- https://cdn.shopify.com/s/files/1/0431/9900/4827/files/34367852593.pdf
- https://cdn.shopify.com/s/files/1/0434/2785/6536/files/27272798023.pdf
- https://cdn.shopify.com/s/files/1/0440/3747/2421/files/70601069142.pdf
- https://cdn.shopify.com/s/files/1/0429/9004/3285/files/fegos.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_off00009454.bin` `f5fe474e61a2ee45eff0a52ceed6b2db54d745231a1c78aba1b05252d70a3d90`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9454	6116 bytes
`font_01_sfnt_off0000a8c8.bin` `e06fc2211d3eb903e33d5312d14f136d544e564ae58c17e13579e81ea127702a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA8C8	10640 bytes

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