PDF malware analysis — malicious · c426a5348201e54c

MALICIOUS

PDF

75.5 KB Created: 2021-01-05 12:02:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: c22e951f35bbd022dce3cec2199c4317 SHA-1: 71ddcf4f4f7323ea4968a5b9bc12eb1633da73e1 SHA-256: c426a5348201e54c87f49a5b89630091167a610edcbd61aa5a6d6c414a5615cc

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating an attempt to phish or deliver malware. The embedded URL is obfuscated within the document body, which is typical for phishing lures. The ML classifier and ClamAV detection strongly suggest malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://cctraff.ru/123?utm_term=big+falls+county+park+camping In PDF document text
- https://vazanopika.weebly.com/uploads/1/3/4/8/134896022/nelejemonewudujutas.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411500/normal_5f9e581ac77e2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376601/normal_5f913791b3e3b.pdfIn PDF document text
- https://cdn.sqhk.co/xufaribo/hhjeRI3/lasuxoxakatu.pdfIn PDF document text
- https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/laxajunow.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4412899/normal_5fdd86b432bec.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/zafijukopa/glassine_paper_sheets_michaels.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fdf45b7b-f7f6-4f4c-a7a4-cf61c098bf70/82960395809.pdfIn PDF document text
- https://s3.amazonaws.com/wizidimawag/avengers_movies_2019_in_tamil.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_off0000e903.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE903	5548 bytes
SHA-256: `ed21401096343e790657a6c08624f3f861d9e63acbfb879adc1429ab911666ca`
`font_01_sfnt_off0000fbee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFBEE	10940 bytes
SHA-256: `5f04a00a6db3131c0d932a5c9a9fd138cfacd51d81d1f2384c591b01cf882971`

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