PDF malware analysis — malicious · 396fbffac53b27c8

MALICIOUS

PDF

74.5 KB Created: 2021-01-04 08:50:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: a6a56ec22f9da0872b06ce9e16b38d14 SHA-1: 74cf3f5af53d7e6957f49165e1f218f8a10f6501 SHA-256: 396fbffac53b27c868257d7310323135ab7a7ca26e02850b60c24a73db44e83d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to host a malicious payload or phishing content. The document body, though heavily obfuscated, suggests a lure related to educational materials, a common tactic for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=naming+ionic+compounds+practice+worksheet+one+answers PDF link annotation
- https://cdn.sqhk.co/kitaparek/fhdicha/zedaxot.pdfIn PDF document text
- https://tenetowebobidiv.weebly.com/uploads/1/3/4/6/134635535/makegeluvisilo_zupov.pdfIn PDF document text
- https://cdn.sqhk.co/xenotami/Mohgha8/toy_story_4_gostream._nu.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/tuxexi/motojutenazozala.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/14668e27-bbdc-4b45-be60-220a0d9de90f/tivukibitemora.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/125cc4e2-8284-4097-be2a-8046411b3e35/ashley_furniture_outlet_bozeman.pdfIn PDF document text
- https://s3.amazonaws.com/xukanomarexumu/spotify_app_android_free.pdfIn PDF document text
- https://s3.amazonaws.com/sojebelevenex/tosekatozorufunetopogagi.pdfIn PDF document text
- https://s3.amazonaws.com/nuxepiduded/game_of_thrones_theme_sheet_music_trombone.pdfIn PDF document text
- https://s3.amazonaws.com/muwemivumazulax/movie_poster_credits_font_download.pdfIn PDF document text
- https://s3.amazonaws.com/sikuva/55673188079.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_off0000e54b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE54B	5580 bytes
SHA-256: `c9183362e2792fcebaa08c631324f47f7f1e47b84652e73b2cc228a9099a664e`
`font_01_sfnt_off0000f835.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF835	10236 bytes
SHA-256: `ca58083962004bddcaf42bcb103330f4246066eeabc600015591149400d9ae28`

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