PDF malware analysis — malicious · e3cd3b2bdce2e1b4

MALICIOUS

PDF

74.4 KB Created: 2021-01-06 12:59:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 17d929763dfd02994306ffdc7262ec7e SHA-1: 78f7c5bd78a8f8326d1b180b0049d115d6e21111 SHA-256: e3cd3b2bdce2e1b44c5f8d284276ed2cbc9d5b2db800f89abb5289ea5b2fd78f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'trafffi.ru', which is likely part of a phishing campaign. The document body, though heavily corrupted, suggests a lure related to resume templates, aligning with the phishing intent.

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/aws?utm_term=resume+template+for+fresh+graduate+free PDF link annotation
- https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/xamirugimelokur.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4474722/normal_5fc7d0b187311.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4496389/normal_5fd22be417f5d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4368506/normal_5fcf3beb4a39a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4451545/normal_5fc40032b56e9.pdfIn PDF document text
- https://cdn.sqhk.co/jutafegobexe/hdig3ih/internet_speed_meter_lite_apk_old_version.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393890/normal_5faef440ac885.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4428334/normal_5fa5b0cc4ab8d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/c5b80a0d-1a5c-4d93-9bd5-2db271aa19b5/nezoluvem.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0b72dffb-2714-41c5-bffa-5fff7992d212/givesi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ee37d352-e935-40c1-89fb-63ac6fc009c4/navy_correspondence_manual_npc.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_off0000e668.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE668	5464 bytes
SHA-256: `d663f78d4d4afdfe3a77c2e40371d2c5004c8e35906e1622dce0da826a3fbe52`
`font_01_sfnt_off0000f8d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8D2	10500 bytes
SHA-256: `bf1e2ae7693c5d3b9564175bc8c3e2bd94eb2cbce5435f789299368904245298`

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