PDF malware analysis — malicious · 886d3bab9a13ba64

MALICIOUS

PDF

49.7 KB Created: 2020-11-03 02:20:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 25fbe6328f594497916b498300c086d4 SHA-1: 11effcd802d481bcc7127c4165610f3903925fa1 SHA-256: 886d3bab9a13ba6478d3298627d15b2bbc34dcce91b8afd5b3406376bd89ea3f

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a link to a known malicious redirector, ggtraff.ru, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The ML classifier also strongly flagged this PDF as malicious.

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://ggtraff.ru/strik?keyword=26+mongoose+ledge+2.1+women+s+mountain+bike
- https://cdn-cms.f-static.net/uploads/4365634/normal_5f980785903fb.pdf
- https://cdn-cms.f-static.net/uploads/4373526/normal_5f97d29b6631e.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://uploads.strikinglycdn.com/files/65269f4d-dcec-4af4-8e58-36203244edfb/32661090797.pdf
- https://s3.amazonaws.com/sazariwapa/bach_biography_worksheet.pdf
- https://s3.amazonaws.com/tudawufed/animal_welfare_act_1999.pdf
- https://s3.amazonaws.com/befarekogol/amsco_ap_world_history_2019_answer_key.pdf
- https://s3.amazonaws.com/juzinaramip/jazumovuzuriwogexite.pdf
- https://s3.amazonaws.com/mavixu/grinch_coloring.pdf
- https://s3.amazonaws.com/rexogeguxosix/52490416309.pdf
- https://s3.amazonaws.com/mufukep/17006396588.pdf
- https://uploads.strikinglycdn.com/files/ce703332-a6b7-447b-8e41-247e1298920e/wajek.pdf
- https://s3.amazonaws.com/bugutaj/ecological_pyramid_answers.pdf
- https://uploads.strikinglycdn.com/files/f53000da-fd7a-40a9-9b3a-39adf655a3c6/lamowuzunezinexutazutonik.pdf
- https://uploads.strikinglycdn.com/files/80532b81-0a0b-4614-ba7a-301b6b8807b7/xifejapuw.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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007604.bin` `6cadd6038a5d39ec74f66728165ca0f68a8c689df54e766cc22a5fbcc817cfb8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7604	5500 bytes
`font_01_sfnt_off000088bd.bin` `b02c286ab895d4e5fd2bbd77981a77da2b59275cfe97d10c5149a8a58c3a3b8a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88BD	10240 bytes
`font_02_sfnt_off0000ab92.bin` `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB92	4324 bytes

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