PDF malware analysis — malicious · 6f1f08fbcef79cb6

MALICIOUS

PDF

82.7 KB Created: 2020-11-25 00:58:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 44d336b6a4ec4c27254e5519c9d5cbb4 SHA-1: d936cd4996c9db71fa20e37fce810c398739e35d SHA-256: 6f1f08fbcef79cb6737fbfb3e30ac8188ce35164897ed3531cd253f46278998f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing purposes. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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
External URI info PDF_URI

PDF contains an external URL action
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://trafficel.ru/strik?utm_term=home+run+derby+schedule+of+events PDF link annotation
- https://cdn-cms.f-static.net/uploads/4394062/normal_5fbd8dfc88b16.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408348/normal_5f9e089a2de20.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/5b4da1cd-4b76-40e5-9be0-a87e4727f7ed/aces_go_places_1997_full_movie.pdfIn PDF document text
- https://s3.amazonaws.com/kufazete/32964802796.pdfIn PDF document text
- https://s3.amazonaws.com/gaxuremewuger/15747236011.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9a1f08a9-cc90-4cb7-9b2d-26c6285515d3/dokerod.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cd6c998f-a5f8-4ef0-91cc-7fc886a7fc68/gevebopaxoko.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f9b92dad-8582-4cde-9f9c-9640bc0f306e/z_max_phone.pdfIn PDF document text
- https://s3.amazonaws.com/xakajoziwibi/mutations_worksheet_answer_key_biology.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e081f156-1789-42c8-9782-7c03d5e667c8/64069853322.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_off000104f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104F8	5312 bytes
SHA-256: `574e8dcc2d4344394b692ae44d11573a01951ba229740909021d25951cf32656`
`font_01_sfnt_off000116f0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x116F0	12028 bytes
SHA-256: `698442dd3caca610d8825be6c9e1f7af76908ceeeb60792427d5a4b389ec632a`

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