PDF malware analysis — malicious · ad7f6cf0cc789f2b

MALICIOUS

PDF

44.8 KB Created: 2020-08-31 05:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 26214deedf7cef605b6c968d0abd42be SHA-1: e45b3201248bbf60c00259701580e59cc0ef0e7f SHA-256: ad7f6cf0cc789f2b98963a1f23cd6b042382df4d79b4b44781fab5a9be81e816

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a redirector URL that is associated with malicious activity. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or manipulate search engine results.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=dil+se+dil+tak+song+female+version+mp3+download
- https://static.usrfiles.com/ugd/9219f8_a65dba465ed44466b57e8100e45e9165.pdf
- https://static.usrfiles.com/ugd/d3758e_1c3d4fc7a7b14cb285de1074c879d2a8.pdf
- https://static.usrfiles.com/ugd/b42fd6_677fe94fded242f9939a919d5014416c.pdf
- https://static.usrfiles.com/ugd/7f16bd_03dd7d2b09314261b95892b1eb53632d.pdf
- https://cdn.shopify.com/s/files/1/0434/2212/2151/files/power_battery_app_apk.pdf
- https://cdn.shopify.com/s/files/1/0429/2873/4367/files/linkedin_profile_template.pdf
- https://static.usrfiles.com/ugd/affb4a_85cb70be1dea487880d3637fa0872236.pdf
- https://static.usrfiles.com/ugd/b8c837_2c28722ba0fb4ef7952034c59dc9e030.pdf
- https://cdn.shopify.com/s/files/1/0429/9217/3217/files/difference_between_android_smartphone_and_windows_phone.pdf
- https://cdn.shopify.com/s/files/1/0429/1851/0745/files/britax_b_agile_stroller_manual.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/
- https://cdn.shopify.com/s/files/1/0429/1851/0745/files/britax_b_agile_

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005d48.bin` `f66540b37603d7dad930b936f6f920e43f6659d11677e9cd80c656bd6f673870`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D48	5528 bytes
`font_01_sfnt_off0000700f.bin` `1373bdb9faff45de14549accfb6b6819f431c819cb1a4af7eaea794aa890edfe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x700F	12464 bytes
`font_02_sfnt_off0000987a.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x987A	4324 bytes

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