PDF malware analysis — malicious · c9a8daea8fae0f27

MALICIOUS

PDF

118.3 KB Created: 2021-01-03 06:17:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: df647b1cc9ef60a8aae06f3284f5fe3a SHA-1: ef35b122543e949527b9bed36b00d7d3d867ccf6 SHA-256: c9a8daea8fae0f27252b71212a6ba8a675439c93e5efc25915ca51cc4ec0e996

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting it's used for phishing or to download further malicious content. While no scripts were explicitly extracted, the PDF structure and the presence of an external URI strongly suggest an attempt to exploit users, likely via a phishing lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=code+veronica+x+chris+guide PDF link annotation
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/553da41e-166e-431e-a237-5ea52d25f729/fekeride.pdfIn PDF document text
- https://s3.amazonaws.com/runuzitexokol/radiography_safety_precautions.pdfIn PDF document text
- https://s3.amazonaws.com/werowibovezoje/65843695154.pdfIn PDF document text
- https://s3.amazonaws.com/ribowexulo/new_dance_video_song_2018.pdfIn PDF document text
- https://s3.amazonaws.com/juzinaramip/cv_template_for_retail_assistant_manager.pdfIn PDF document text
- https://s3.amazonaws.com/vetamedisoz/klasifikasi_gastropoda.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f0cb46db-93d9-428f-b4e5-290248df3e53/summer_gel_nail_ideas_2020.pdfIn PDF document text
- https://s3.amazonaws.com/fejakixoweka/turistick_mapa_budapest.pdfIn PDF document text
- https://s3.amazonaws.com/goviwigax/relawowi.pdfIn PDF document text
- https://s3.amazonaws.com/kudefem/gaap_accounting_guidelines.pdfIn PDF document text
- https://s3.amazonaws.com/kewakuko/3d_wallpaper_flower_rose.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_off00019440.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19440	5204 bytes
SHA-256: `d2782336e176ceb6a84294522ee99a967ec645500f44cec71ba95690e0c23a16`
`font_01_sfnt_off0001a5ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1A5EC	11480 bytes
SHA-256: `96a842e578c79e5cfb0188334848d878d911e03c77216ed4b368b32cefb9d872`

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