PDF malware analysis — malicious · ceb06dbb491e6d48

MALICIOUS

PDF

41.6 KB Created: 2020-10-16 13:42:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: e9547d8c8ba7d72692a9c6dd94b8618c SHA-1: f0c42c2d0c40e0b74649a3963c6523e125dd275d SHA-256: ceb06dbb491e6d4896639ef7ad02a1a6047d36342d27a29d17af2131a0ca656b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of many external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content.

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://gettraff.ru/123?keyword=jurnal+karakteristik+wirausaha+pdf In PDF document text
- https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/8003111.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366309/normal_5f896fa521486.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369901/normal_5f88799629a87.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366637/normal_5f88ec7a7e2ea.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375716/normal_5f896daa9f21c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367642/normal_5f888f570efa1.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0427/9926/8003/files/xonawutiribulokipadu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6457/3593/files/honda_lawn_mower_manual_hrx217.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/5956/3682/files/fundamentals_of_engineering_thermodynamics_8th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5996/1239/files/95705856806.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/3095/7208/files/ozark_trail_3_person_dome_tent_assembly.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4d274463-5d53-4afe-9145-86e29b9117be/21743251702.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/52089943-5e98-49ba-b8f4-e9350ef381b1/molamovafelizuresegusu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0479/9440/5023/files/jeopardy_sound_effects_buzzer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0488/3437/9941/files/minecraft_series_ideas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/8717/9160/files/matrix_algebra_problems_and_solutions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/1167/8623/files/moxie_beauty_bar_nj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/5301/3928/files/sigma_1200_bike_computer_setup.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/83e9175a-de07-4eee-acb7-db840b4364d9/riwibuzuburizalomojon.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/18cf13d3-9b25-4b16-9ea1-2a111d751948/83179618989.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fbe30bb0-393f-4056-a430-d3c7a7dee3e6/81126737008.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/03790791-2cdf-49b3-b201-31090d47af05/26879775902.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7fc2b3ca-c918-4e35-a83c-4c2971ec178b/7204199301.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005729.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5729	5048 bytes
SHA-256: `96f897bf208885e6c689b8e01aa898782507956c5c2793b27565a575242a597b`
`font_01_sfnt_off00006853.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6853	10032 bytes
SHA-256: `edc07829975e2deaa43e9b215ad37e57089b261d06f429b0285a263c3fb2ea1a`
`font_02_sfnt_off00008a8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A8E	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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