PDF malware analysis — malicious · ef48273b79564883

MALICIOUS

PDF

74.2 KB Created: 2020-08-30 17:45:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0f5152579e5a0102ab2473f367a39e6e SHA-1: 7737d7f519f558ee3043e6585573f471d2aa1046 SHA-256: ef48273b79564883dbe22c478a13640530e6b4c6d88e7ea948bd4650669f8c9c

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to drive traffic to this malicious site. The ML classifier strongly supports the malicious nature of this PDF.

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.com/wix?keyword=information+technology+%25D1%2583%25D1%2587%25D0%25B5%25D0%25B1%25D0%25BD%25D0%25B8%25D0%25BA+%25D0%25B3%25D0%25B4%25D0%25B7
- https://static.usrfiles.com/ugd/4c1554_b6e4ddb25b2f43e28cd3c7a7299afcc0.pdf
- https://static.usrfiles.com/ugd/96768c_8c7ac31b042d44ca843f50dd659186bb.pdf
- https://static.usrfiles.com/ugd/bb13a2_5acdfae020164995933745322e9b2f6f.pdf
- https://static.usrfiles.com/ugd/136d07_0a2dcd1e85af40d79044e988f02d1b6f.pdf
- https://static.usrfiles.com/ugd/f80014_0c5b3662c02945f7801f5923e0c502d1.pdf
- https://cdn.shopify.com/s/files/1/0430/6419/7273/files/warframe_esher_devar.pdf
- https://static.usrfiles.com/ugd/b8c837_15a4f5a93a2748b7bd9503e57016333a.pdf
- https://static.usrfiles.com/ugd/b8c837_65ba4661c4114ae5b19122fcf15efaec.pdf
- https://static.usrfiles.com/ugd/cbe7f7_741e4ef8180f43b08cce0fe89c521e9e.pdf
- https://static.usrfiles.com/ugd/8b9728_35094c755eba46369e020482323fc148.pdf
- https://cdn.shopify.com/s/files/1/0436/5680/6553/files/71629405229.pdf
- https://cdn.shopify.com/s/files/1/0434/0868/7269/files/dukirijetaxazojub.pdf
- https://cdn.shopify.com/s/files/1/0434/5341/5576/files/86205322217.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_off0000d4d9.bin` `dae81d973948c7c31f98f553a0b0575697081d2d933bc2d327a9b93cfc7101cf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD4D9	6144 bytes
`font_01_sfnt_off0000e91f.bin` `2c1c191cf4b61a0e57b22dea3c75f05cb68de9739fb87721131223d8941109e2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE91F	15568 bytes

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