PDF malware analysis — malicious · 4d32b18ea4b91309

MALICIOUS

PDF

39.0 KB Created: 2020-08-01 23:32:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9a4e91f2e94e41479e5f8966e192eb2e SHA-1: 439bd94fe7fa6c7efbf631acce17147193cd0a2a SHA-256: 4d32b18ea4b9130988e18df718dc39f8687ff875124190343fc5fc58d30dbf2d

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in a lure for 'mp3 download skull'. The document body also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm for SEO poisoning or traffic generation. The ML classifier also flagged this PDF as malicious with high confidence.

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.com/pify?keyword=mp3+download+skull
- http://files.arkspringbaptistchurch.net/uploads/1/3/2/3/132303010/8741469.pdf
- http://files.susancoffeylmt.com/uploads/1/3/1/1/131164520/pokisizokidiwu-sebomel-duziwe-nofikuv.pdf
- http://files.nancycarolmoody.com/uploads/1/3/1/3/131382320/2134090.pdf
- http://files.velaluxuries.com/uploads/1/3/1/3/131398378/5737164.pdf
- http://files.erikastdenis.com/uploads/1/3/1/4/131437977/77d5bf55.pdf
- https://cdn.shopify.com/s/files/1/0429/3410/8323/files/mugawusis.pdf
- https://cdn.shopify.com/s/files/1/0437/0091/2278/files/nusoromonema.pdf
- https://cdn.shopify.com/s/files/1/0435/8035/8811/files/minugam.pdf
- https://cdn.shopify.com/s/files/1/0433/5016/3609/files/hacknet_bit_propagation.pdf
- https://cdn.shopify.com/s/files/1/0439/8543/6830/files/vivaba.pdf
- https://cdn.shopify.com/s/files/1/0429/8499/7025/files/48589899301.pdf
- https://cdn.shopify.com/s/files/1/0432/0323/1908/files/30037711428.pdf
- https://cdn.shopify.com/s/files/1/0431/3019/2039/files/widavitixaxotoji.pdf
- https://cdn.shopify.com/s/files/1/0433/5996/1237/files/80760636088.pdf
- https://cdn.shopify.com/s/files/1/0428/6083/9079/files/47795073518.pdf
- https://cdn.shopify.com/s/files/1/0430/0334/7097/files/lexazifukomux.pdf
- https://cdn.shopify.com/s/files/1/0432/1745/3211/files/bameterewojozasil.pdf
- https://cdn.shopify.com/s/files/1/0436/1987/7024/files/jeporena.pdf
- https://cdn.shopify.com/s/files/1/0431/3664/7317/files/wulakewonu.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_off00005b9d.bin` `67e1cbc199818b7739cdec2b1bf03ee927fcf8f11fbb334d4aaea8fc87b5dc0c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B9D	5184 bytes
`font_01_sfnt_off00006d70.bin` `1d6d03fbf99fcc92bd14fc7a0007c289a943d8bfd91daf09ecfa91d5a1a146c0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D70	9916 bytes

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