PDF malware analysis — malicious · 5c351b2cf0141b68

MALICIOUS

PDF

61.3 KB Created: 2020-10-28 07:32:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 1e5d916bdbd97daa2a788013b297ec8e SHA-1: 1fe48abd65bfae5e1026317d6f0dac08ed613fc1 SHA-256: 5c351b2cf0141b6893410f5f2da0afc329e44646a036494e7dea873b35f3e8ee

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure. Additionally, it features a large number of embedded links, suggesting a link farm or phishing attempt. The ML classifier also strongly flagged this PDF as malicious. The embedded URL 'https://gettraff.ru/123?keyword=love+cherry+motion' is the primary indicator of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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=love+cherry+motion In PDF document text
- https://cdn-cms.f-static.net/uploads/4369189/normal_5f93530b8fc59.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413119/normal_5f95668b6111b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367631/normal_5f889f0c0679c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387931/normal_5f965fb16bb0e.pdfIn PDF document text
- https://bixivotanaxifu.weebly.com/uploads/1/3/4/4/134449973/2168521.pdfIn PDF document text
- https://jifilebipik.weebly.com/uploads/1/3/4/3/134375607/f84f2a44ad0bf.pdfIn PDF document text
- https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/9990752.pdfIn PDF document text
- https://gukaguse.weebly.com/uploads/1/3/1/3/131398473/lipifa-ruliviwunina.pdfIn PDF document text
- https://xosotujusosevo.weebly.com/uploads/1/3/4/3/134377620/dobagota-besozukenoj-beroterupakine-wubulipawewonab.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/1/0501/8900/9069/files/natowebogi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/5328/4008/files/renal_function_test_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/0793/4103/files/scimitar_vs_falchion_reddit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9443/2161/files/mulan_shan_yu_toy.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5015/5688/files/jegufewujenojo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0480/3346/4479/files/26795738474.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/3163/7415/files/fepud.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6d78bd6b-2fe4-4f81-ad2d-28f4e552d3e8/modufuribumatotelelebowi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b08c1124-e5e3-4417-a33e-eee9a061fc04/kugamusofowuzilux.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/15d1298e-37ef-4a67-a7c4-dca58f54c863/90680375708.pdfIn PDF document text
- https://s3.amazonaws.com/fomaralunex/autodesk_dwg_trueview_2014_tutorial.pdfIn PDF document text
- https://s3.amazonaws.com/jedaxopopuko/46137758759.pdfIn PDF document text
- https://s3.amazonaws.com/vexeliku/adobe_after_effects_2017_book.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/job_application_letter_file_download.pdfIn PDF document text
- https://s3.amazonaws.com/wekibik/children_s_tylenol_dosing_chart.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000786d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x786D	13568 bytes
SHA-256: `34f5b966c35c6f8affc95b536902129753e418d054f76a66c1bf897d66363f00`
`font_01_sfnt_off0000a274.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA274	4512 bytes
SHA-256: `57f1ece73bcd6fe997b6a1c9e589e1fee6d832a4740f5939932aba7f1f07ae33`
`font_02_sfnt_off0000b1a6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB1A6	11212 bytes
SHA-256: `bd89ed00fe94d18042f330b7dc67bf805a4152f7aa97582c40b3de380aaa04d9`
`font_03_sfnt_off0000d768.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD768	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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