PDF malware analysis — malicious · 656c774e85eae9f4

MALICIOUS

PDF

77.3 KB Created: 2021-01-12 14:06:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 3b87edddc161853ff6cf03cfea919dd4 SHA-1: 7f0021aaf6ee71783e37bba6c9d9c9b1c17a7cc5 SHA-256: 656c774e85eae9f4620e911394b41529a83a188fa753febdbd186ae27ad0c77e

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=games+and+balls+mod'. This URL is known to be associated with malicious activity. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious redirector strongly suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9923

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://traffmen.ru/aws?utm_term=games+and+balls+mod In PDF document text
- https://site-1175605.mozfiles.com/files/1175605/old_el_paso_chicken_gordita_kit.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375507/normal_5f9705dae6689.pdfIn PDF document text
- https://cdn.sqhk.co/fuzomorikat/OgfTQQx/ferelavokalexikowi.pdfIn PDF document text
- https://cdn.sqhk.co/muligumixe/AmdhgM0/british_royal_family_tree_queen_victoria.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/vofadoloves/spreadsheet_geogebra_app.pdfIn PDF document text
- https://s3.amazonaws.com/patotale/sesungguhnya_alif_satar_dan_raihan.pdfIn PDF document text
- https://s3.amazonaws.com/gopuze/67566047381.pdfIn PDF document text
- https://s3.amazonaws.com/dazinibonofobi/armonia_cromatica.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_off0000f340.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF340	5048 bytes
SHA-256: `03efdc8517a26fdf11f62e1f34ff87dc8fbcbcdefd6006325e5fde4664415cca`
`font_01_sfnt_off00010458.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10458	10704 bytes
SHA-256: `e4389deee4efcc5e803e72e0528e985b5373eada3bc0db4ca9f97017999027da`

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