PDF malware analysis — malicious · b43faefe8b69c87d

MALICIOUS

PDF

85.5 KB Created: 2020-10-30 14:11:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: 33cec8c808556d8ce64b55fa537e61cb SHA-1: fbeca21e68b12676c714b42455017b2b3ee6232f SHA-256: b43faefe8b69c87df4db6245e152d511541fbb982d9c3c61851ffa6ec2e1bb7f

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 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing site or a download host for further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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/123?keyword=danticat+children+of+the+sea In PDF document text
- https://tuwijojax.weebly.com/uploads/1/3/4/4/134477229/riwiduvupikex_luxawinedodadur_vifupubiduma.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/jivuxo/makedajosutu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3d7a4cf7-9c90-47ba-ba93-a6deb52f7028/7788530785.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/franchising_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/3324/5880/files/16132267560.pdfIn PDF document text
- https://s3.amazonaws.com/xamibudasagas/recetas_de_comidas_peruanas_faciles_de_preparar_en_casa.pdfIn PDF document text
- https://s3.amazonaws.com/pezofut/30274926307.pdfIn PDF document text
- https://s3.amazonaws.com/bupaxomu/rogiz.pdfIn PDF document text
- https://s3.amazonaws.com/pibabopuduj/96820709816.pdfIn PDF document text
- https://s3.amazonaws.com/robumuduluwise/zirajafesafuwajero.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_off00010636.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10636	4896 bytes
SHA-256: `c0e8b52aa182ba53b15d2d996f90fc8eb676cf30b578f9c0ba517a3bba1563c0`
`font_01_sfnt_off000116c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x116C8	10588 bytes
SHA-256: `4a6b1cf645548458391a635727ddc268cf0d9844d7d334acbd703187964667fc`
`font_02_sfnt_off00013ad5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13AD5	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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