PDF malware analysis — malicious · 616ee5cb287fc504

MALICIOUS

PDF

49.5 KB Created: 2020-10-26 05:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: c9fa0c31e5d37f6107c185760341d123 SHA-1: 3cc5fc1bca1645c0fef6665f5506134c598b5a14 SHA-256: 616ee5cb287fc50499a16ce3faa16b334d02626df33fdb04c9a57e0fc639201f

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to potentially malicious redirector infrastructure. The primary malicious URL identified is https://ggtraff.ru/123?keyword=vitamin+k+guidelines+for+coumadin+reversal. The document's structure and the presence of numerous external links suggest an attempt to create a link farm or redirect users to malicious content, likely as part of a phishing or scam campaign.

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://ggtraff.ru/123?keyword=vitamin+k+guidelines+for+coumadin+reversal In PDF document text
- https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/ff06dfdf.pdfIn PDF document text
- https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/tuzuvebijuk_zumasozen_xumidazi.pdfIn PDF document text
- https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/2632054.pdfIn PDF document text
- https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/df415b2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402960/normal_5f938626a9ce1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368244/normal_5f89e8c47726b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377925/normal_5f8d5a25946b7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372735/normal_5f8ebfe59b5cb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374518/normal_5f8a10cf2316c.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://s3.amazonaws.com/bulozor/can_t_stop_this_feeling_sheet_music.pdfIn PDF document text
- https://s3.amazonaws.com/wotodedaruzuk/17549032303.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/xuxamadupuwijalid.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0638/5558/files/ncdpi_earth_science_standards.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1502/0449/files/40352446007.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/4825/8714/files/technicolor_tc4400-am_user_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/5532/4570/files/varuxaji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/3941/5191/files/main_types_of_pumps.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/8361/9232/files/liste_aliments_sans_gluten.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/7534/6847/files/espn_fantasy_football_app_android.pdfIn PDF document text
- https://s3.amazonaws.com/memul/19980634641.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/oxford_dictionary_download_english_to_urdu.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_off000075fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75FD	5312 bytes
SHA-256: `731ce51ef2f5b4f822ee2686ecb8cedb58a67f19a56b8e6332e7d40219e4bb37`
`font_01_sfnt_off00008800.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8800	9988 bytes
SHA-256: `ea739bfeb008db972751786bcecae8b87d149eb22646d98be501e49d5182d768`
`font_02_sfnt_off0000aa24.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAA24	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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