PDF malware analysis — malicious · 83defae0522beac8

MALICIOUS

PDF

69.2 KB Created: 2021-01-06 08:45:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 241802dec8f86344728eed43e6216bd1 SHA-1: ee1f833fb6357d3882ca4e931f5fc2fbeb35e333 SHA-256: 83defae0522beac871c80618cfe03705920892ac0da874a1e25dc4e37dd0f820

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI that points to a suspicious domain, likely intended to trick the user into downloading a malicious payload. ClamAV and ML classifiers strongly indicate this PDF is malicious, specifically flagging it as a phishing trojan. The presence of embedded URLs and the overall structure suggest a phishing attempt disguised as a legitimate document.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=vocabulario+analogias+sinonimos+antonimos+homofonos+pdf PDF link annotation
- https://cdn.sqhk.co/bozadukopufu/1IjaKUT/4874023522.pdfIn PDF document text
- https://losuwasujiro.weebly.com/uploads/1/3/1/6/131637226/51e559530.pdfIn PDF document text
- https://cdn.sqhk.co/rogokivika/Nghji1a/63119522216.pdfIn PDF document text
- https://ninisajata.weebly.com/uploads/1/3/4/8/134869212/rekofimud.pdfIn PDF document text
- https://cdn.sqhk.co/lapefuxolu/ixohhgj/1016011800.pdfIn PDF document text
- https://puzagejezazi.weebly.com/uploads/1/3/4/4/134465952/6195777.pdfIn PDF document text
- https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/4971469.pdfIn PDF document text
- https://cdn.sqhk.co/rogapakaler/Pgg8Zha/1645712023.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/jukezeluf/moonlight_sonata_3rd_movement_sheet_music_guitar.pdfIn PDF document text
- https://s3.amazonaws.com/zuxadol/66160079034.pdfIn PDF document text
- https://s3.amazonaws.com/jifesu/katomixosituj.pdfIn PDF document text
- https://s3.amazonaws.com/lovetijif/bazoserub.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_off0000d2a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD2A3	5676 bytes
SHA-256: `73adce487c1a55a1c5f563bf356189c49bd7070fc7acf1cb6196af2550d141d0`
`font_01_sfnt_off0000e5bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5BF	9964 bytes
SHA-256: `35fdc623f7ca5ea5fb0f77c9e6209b692e7868b1309ddec12b2cf0efee02b2f9`

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