PDF malware analysis — malicious · 910810a1fa01eb53

MALICIOUS

PDF

64.2 KB Created: 2020-12-11 19:14:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: c660292db0c532c98cc36ef467620585 SHA-1: d4ab20b4b16d23a2884084c5f450c28f1ff5e24f SHA-256: 910810a1fa01eb53a3a1fac8f5a672408849fbea53acf9f9b44b954d3a9b0cfb

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffi.ru/123?utm_term=step+7+workbook+a PDF link annotation
- https://static.s123-cdn-static.com/uploads/4391314/normal_5fc88151f3237.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4367960/normal_5fca04c7122d3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365589/normal_5f871f7c22653.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486534/normal_5fbc8dd97ea01.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387716/normal_5fa48ae99cee4.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/gadumagabusodel/algebra_2_trig_regents_review_packet.pdfIn PDF document text
- https://s3.amazonaws.com/bejenosugede/endeavour_energy_outage_information.pdfIn PDF document text
- https://static1.squarespace.com/static/5fce6b3df16e5f16f94c9326/t/5fd1db0bfec2791e3108a3f9/1607588620065/sunetujeseziwanevasutus.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b684e740-0ad8-4fe7-99f3-3fae59c898a2/mobenigewigisuwifesu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/82a73297-abe1-4daa-9e8e-208949076831/82640865577.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d121ceab-f430-4f7a-bee2-a274cbdde7cb/26881421360.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/bepukodejukopagat.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_off0000bf39.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBF39	5080 bytes
SHA-256: `96bfdb50edc04c8051a91c34d997d28b151adadb1444e3e9447abc5e4844ecf2`
`font_01_sfnt_off0000d0ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD0AD	10660 bytes
SHA-256: `cd9ccf4ac81133636c6029f8974c285f8aa6dd9849b7139030926b1482448afe`

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