PDF malware analysis — malicious · f412bbafb36f389a

MALICIOUS

PDF

69.2 KB Created: 2020-12-27 07:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 8c4e810d557676c67eb40985f6bb98d9 SHA-1: e7bdedac7caa1b86329906c00b81449a07302fb5 SHA-256: f412bbafb36f389ae961bd816a6aca670341bbe76d45093b7119c51c3da3f0be

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic firing for an external URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no explicit script was extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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=halomorphic+soil+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4369763/normal_5f917c213c878.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/puretulenuza/ekg_plain_and_simple_4th_edition.pdfIn PDF document text
- https://s3.amazonaws.com/wamatasamegu/battlefield_5_free_for_mac.pdfIn PDF document text
- https://s3.amazonaws.com/fevobelijogal/29289226278.pdfIn PDF document text
- https://s3.amazonaws.com/jitimesolagun/brche_am_zahlenstrahl_aufgaben.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/zegano.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eff5cd52-e9a8-4f19-9ce6-54c018838bee/54731981362.pdfIn PDF document text
- https://s3.amazonaws.com/ritoma/gta_san_andreas_cheats_pc_full_list_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8fa9dc66-a743-4c19-895a-752fc8baed8a/4420488969.pdfIn PDF document text
- https://s3.amazonaws.com/sebunuzu/nireripebijavab.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_off0000d2db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD2DB	5356 bytes
SHA-256: `c956f72079727bf76a004602741f427ac75f94ab60af67686f1ca6ec8294e879`
`font_01_sfnt_off0000e4e2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE4E2	10348 bytes
SHA-256: `2a4dc9c10d5826b7a14b8ae8b1dbaad3fc484ad924e5841477347ab715ecf9a8`

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