PDF malware analysis — malicious · d879a88fbb8204d3

MALICIOUS

PDF

68.1 KB Created: 2020-09-06 01:13:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 499bfb35d7f45cba60b367ec3614761f SHA-1: dde438622b46dc809a8c7794c49240f36491d693 SHA-256: d879a88fbb8204d349fccefde795f63daf109773e56e5d8655b12c323a579a03

148 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF document contains numerous embedded links, including one identified as a malicious redirector. The heuristics indicate it's a link farm and potentially a fake invoice or payment lure, suggesting the primary goal is to trick the user into clicking the malicious URL. No scripts were extracted from this sample, limiting the analysis of its execution behavior.

Heuristics 5

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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.me/wix?keyword=endocarditis+prophylaxis+guidelines
- https://cdn.shopify.com/s/files/1/0437/4714/7928/files/62299423208.pdf
- https://cdn.shopify.com/s/files/1/0433/0664/7717/files/sonev.pdf
- https://cdn.shopify.com/s/files/1/0432/4392/9757/files/zadesifufirimegetakiroj.pdf
- https://static.usrfiles.com/ugd/48d9a1_8a487192c8554334821ac17a6f83db73.pdf
- https://static.usrfiles.com/ugd/87b9a8_0e3aff392fd84b66b255b6b2fcb863e2.pdf
- https://static.usrfiles.com/ugd/79e0dc_b5accf7923e64d10969cc993a5c10db4.pdf
- https://static.usrfiles.com/ugd/90c678_885dd4d228f544ac9305a1d43e7a7705.pdf
- https://cdn.shopify.com/s/files/1/0434/8048/1954/files/zentangle_pumpkin_template.pdf
- https://cdn.shopify.com/s/files/1/0435/3461/4688/files/neverwinter_nights_walktrough.pdf
- https://cdn.shopify.com/s/files/1/0427/6636/8935/files/merulu.pdf
- https://static.usrfiles.com/ugd/f64db8_5b6100f22ed34f9ea0e14c979e8c8e96.pdf
- https://static.usrfiles.com/ugd/b8c837_861f8523df4c4ac38abca19799ba8965.pdf
- https://static.usrfiles.com/ugd/5c9621_51142d7c81ff45afb283670826b18f8a.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_off0000cc8f.bin` `95c4844554453d3350511d8a29dd318a5f7f2f318eaab490d5b4457ddc05238a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC8F	5460 bytes
`font_01_sfnt_off0000df31.bin` `604acd8e4e2dfcb5a9d4207d539289b0bc3e94230199bbb04edb815cbadbc812`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF31	10816 bytes

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