PDF malware analysis — malicious · 79883e0dd6c35f55

MALICIOUS

PDF

51.4 KB Created: 2020-10-31 01:42:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8c809eea1676c161dc96e8ba03b64264 SHA-1: 1d8e2d23e0b39522415b0f52e8cc9880f3164453 SHA-256: 79883e0dd6c35f55ac7a9e72943ceb1f6b4eaa2b65e45b4bdfce9d1ba9cc771f

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?keyword=ios+keyboard+apk+2020'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The ML classifier also flagged this PDF as malicious. The presence of this link indicates an attempt to redirect the user to a potentially harmful destination.

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.
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://gettraff.ru/123?keyword=ios+keyboard+apk+2020
- https://cdn-cms.f-static.net/uploads/4368953/normal_5f89163c7c9ae.pdf
- https://cdn-cms.f-static.net/uploads/4374848/normal_5f9beffc4f797.pdf
- https://cdn-cms.f-static.net/uploads/4392453/normal_5f9abb011d5d2.pdf
- https://cdn-cms.f-static.net/uploads/4379841/normal_5f9b06a4c71ab.pdf
- https://cdn-cms.f-static.net/uploads/4379374/normal_5f8d566e6346c.pdf
- https://cdn-cms.f-static.net/uploads/4365591/normal_5f9c70493ac62.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/9d0571a3-222b-4fb5-ad58-3f088f6fd210/sefulozivodap.pdf
- https://uploads.strikinglycdn.com/files/f60fa163-226f-47b4-9e55-f3f90c242b6b/midudupufip.pdf
- https://uploads.strikinglycdn.com/files/c3845014-54bb-453c-bde8-b518d0291afb/48292073889.pdf
- https://uploads.strikinglycdn.com/files/a928177f-fdd9-40e2-ad4a-1522d44a820a/jasifenoxobi.pdf
- https://uploads.strikinglycdn.com/files/31227407-f077-44cc-9dc8-ca3b18e886eb/pevadefa.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/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
- http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_005_off0000a093.bin` `03042f516299aa5ffd2c02dd1e0d2a4ea9615323fe599489fc7432ada83eb4f2`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xA093	19336 bytes
`font_00_sfnt_off0000653d.bin` `5a3f4b32add157d83e88d855ce7e98956403c4d4ba711a7d3ac0c62c4e59f7b4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x653D	5440 bytes
`font_01_sfnt_off000077cb.bin` `325dc92e31f7fddaae9c5a9b97c36b0768fc4c8de485f0785961f04d7934fc99`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77CB	12120 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.