PDF malware analysis — malicious · 6c5dce13a167cf2d

MALICIOUS

PDF

44.7 KB Created: 2020-09-11 23:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: df54fa108cd58de278648ca87da96475 SHA-1: 84ffca4f940883340a6cb09f99cf66dd654caf8a SHA-256: 6c5dce13a167cf2d04804a2f9f7f803a96169f69ffa0d14154ce3bf9410bcc05

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of the malicious URL and the high confidence ML score indicate a high likelihood of malicious intent, likely to lure users to a phishing or malware-hosting site.

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://ttraff.com/wix?keyword=factor+by+grouping+polynomials+worksheet In PDF document text
- http://files.noamonn.com/uploads/1/3/0/7/130775222/vitopefizuwaneluno.pdfIn PDF document text
- http://gusex.amazon-dark.com/uploads/1/3/1/6/131636777/73424f.pdfIn PDF document text
- http://neduw.firstfriendsrobotics.com/uploads/1/3/1/0/131070420/4217291.pdfIn PDF document text
- http://kukosi.housespechomeinspections.com/uploads/1/3/2/6/132682076/gotufujusogus_baguvib_ziwapisemofidap.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6504/1311/files/gb_instruments_gdt_11.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6441/7695/files/ipomoea_hederifolia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1898/5372/files/amazing_spider_man_3_ppsspp.pdfIn PDF document text
- https://static.usrfiles.com/ugd/7ea8bb_01c94777adf74147b42abae1af72b4d3.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_263d4133e17c4f9e95aaa360348159d3.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006483.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6483	5700 bytes
SHA-256: `0c272174a37ba7bf400991feb1a5e0b9d9e06c5b36316809c8998af21a1ea0bc`
`font_01_sfnt_off000077db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77DB	13908 bytes
SHA-256: `082da2e4eb3a3e92d4189ec603011984ae40588af83e2a70e892890a1ad66d4f`

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