PDF malware analysis — malicious · d86feede4fa1ebce

MALICIOUS

PDF

203.6 KB Created: 2021-01-10 13:22:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 22217c5b5aaab94d56c0d4078113f25e SHA-1: 9170983907dfffb23c280d6821564418e9acc802 SHA-256: d86feede4fa1ebcefda5e393e30ed1a363e0762bf4f8b7bf3c0b9a9d3a7bb996

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to 'trafficel.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to 'A tipicidade formal da conduta'. No scripts were extracted, but the PDF structure and embedded URI heuristic indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9963

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
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/aws?utm_term=a+tipicidade+formal+da+conduta PDF link annotation
- https://cdn-cms.f-static.net/uploads/4366011/normal_5f87bf4dcfec3.pdfIn PDF document text
- https://site-1176306.mozfiles.com/files/1176306/chicken_run_2_movie_insider.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4414502/normal_5fdcc5379f2a5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4476446/normal_5fe3189282fb5.pdfIn PDF document text
- https://cdn.sqhk.co/vivepovugeli/HLSiic2/jiffy_lube_live_seating_chart_orchestra.pdfIn PDF document text
- https://site-1179234.mozfiles.com/files/1179234/58855335073.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370056/normal_5fdc12b99234e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372087/normal_5f89f73f54e8d.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/pujirageg/malayalam_movie_actress_photos.pdfIn PDF document text
- https://s3.amazonaws.com/roxawo/eastern_hognose_snake_care_sheet.pdfIn PDF document text
- https://s3.amazonaws.com/tetenifeme/cookie_clicker_hack_chromebook.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_off0002e250.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E250	5112 bytes
SHA-256: `abf8116c2f133de663572315f0b0a9af1fc4027dbc9df5af2a05f1871fffd5fc`
`font_01_sfnt_off0002f3a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F3A4	15580 bytes
SHA-256: `3a1025d002125e8f79e47781b897f38b8f0ffc775305cce4ef3d33a08c4b80b0`

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