PDF malware analysis — malicious · 299a9a550ae67985

MALICIOUS

PDF

88.2 KB Created: 2021-02-22 05:32:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 11a0a676eaf14e96fdba7795f303326c SHA-1: d90030a21aca6bff3062a58acf0a0b2744bcca0b SHA-256: 299a9a550ae679857f3ea6045733fa042470c4cb954e1ba033c178ba8d96c4c3

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily garbled, suggests a lure related to refrigerator repair, which is a common tactic for phishing campaigns.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

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://leonvi.ru/aws?utm_term=how+to+stop+force+defrost+samsung+refrigerator PDF link annotation
- https://cdn.sqhk.co/lojibuwe/igCyMhj/police_academy_sound_effects_guy_gun.pdfIn PDF document text
- https://cdn.sqhk.co/wawabosamugo/idgjhe2/90871915072.pdfIn PDF document text
- http://help-verifiedbadgecenter.com/wutelolepz4qw.pdfIn PDF document text
- https://cdn.sqhk.co/suwapipejob/dXCgjje/25258269786.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414864/normal_601c9d071a326.pdfIn PDF document text
- https://cdn.sqhk.co/gokarunedod/eZhgibq/59549542984.pdfIn PDF document text
- http://rebelliona.online/bose_quietcomfort_25_android_currysn24qx.pdfIn PDF document text
- https://cdn.sqhk.co/nubavojek/JghiaMU/pac_man_ghosts_names.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/zuponefi/47300685513.pdfIn PDF document text
- https://s3.amazonaws.com/verirejon/outstanding_expenses_treatment_in_balance_sheet.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00011236.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11236	2940 bytes
SHA-256: `b1a9ff6ba35dc6afe0897100fc92f3f1f3234f8fbf85b49142f1f5db2d57e62f`
`font_01_sfnt_off00011cc2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11CC2	5496 bytes
SHA-256: `d8252e3db7ccf91e60b49344d2acc8783ce43345281829cd8fb502650e048e48`
`font_02_sfnt_off00012f73.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F73	10620 bytes
SHA-256: `5cd8eb37c1d94065dd18a57e4ff0a4022cc29fbe7d2a0f7e331c2bfecd808d6d`

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