PDF malware analysis — malicious · 42ff941b641a6cf2

MALICIOUS

PDF

48.9 KB Created: 2020-08-30 20:23:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fe3ffff137c71bfeb118e275a4175848 SHA-1: 227a4d302d413a624135361766bb617096db5fb2 SHA-256: 42ff941b641a6cf27200db0d43cb2f8f5dc0575cbac1e896f3fe61b99092acbb

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link that redirects to a known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text that appears to be a lure for 'apologia biology student notebook pd'. The PDF_SEO_LINK_FARM heuristic also indicates the presence of numerous external PDF links, suggesting a link farm or SEO poisoning attempt. The primary malicious IOC is the redirector URL.

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/wix?keyword=apologia+biology+student+notebook+pd
- https://cdn.shopify.com/s/files/1/0434/1586/3452/files/faxinexe.pdf
- https://cdn.shopify.com/s/files/1/0431/8186/7176/files/vifimekiforedoxagojoxud.pdf
- https://cdn.shopify.com/s/files/1/0431/1007/2481/files/breakaway_audio_enhancer_review.pdf
- https://static.usrfiles.com/ugd/270e53_1b040861b175452db6baed2d79e62b6c.pdf
- https://static.usrfiles.com/ugd/b8c837_a7766977706946cdbdfdda9685ee254a.pdf
- https://static.usrfiles.com/ugd/b8c837_cff675cc254f44c1bde6a67e3e295c02.pdf
- https://static.usrfiles.com/ugd/4b7290_1347f71a7da24c75b51c8e0a23eb21e8.pdf
- https://static.usrfiles.com/ugd/d94ae5_bbd259a7bc2e445a80822b0c9de46da3.pdf
- https://cdn.shopify.com/s/files/1/0429/7352/8223/files/88950665190.pdf
- https://cdn.shopify.com/s/files/1/0428/5300/7526/files/best_photo_editing_app_for_android_2019.pdf
- https://cdn.shopify.com/s/files/1/0433/5170/3706/files/tetadi.pdf
- https://cdn.shopify.com/s/files/1/0463/0645/9808/files/bilunamixelirox.pdf
- https://cdn.shopify.com/s/files/1/0434/5207/2088/files/73994082410.pdf
- https://cdn.shopify.com/s/files/1/0433/4475/6901/files/sobujakepe.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000069e2.bin` `b1b7d6ed90066f5d7044cf3a19c56722ebd9fe3d9baff02ad90eadd8fa94701d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69E2	5208 bytes
`font_01_sfnt_off00007ba1.bin` `e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BA1	1800 bytes
`font_02_sfnt_off0000842f.bin` `b3061d5c1bcb2b15acbd9e183e32f97378722c2016610a46ae26b95c714dd6da`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x842F	10744 bytes
`font_03_sfnt_off0000a834.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA834	4324 bytes

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