PDF malware analysis — malicious · 6db74807c8033286

MALICIOUS

PDF

75.9 KB Created: 2020-12-27 17:32:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 5af1968868cd44663a647cdfeff0b533 SHA-1: 310a2acb61e5097cebe14075a5bc96c8626b2460 SHA-256: 6db74807c8033286d5d3138ad07d4322a2cc2dcf0f067bf50f9fe521dd9552da

136 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample was detected as a phishing trojan by ClamAV and flagged by an ML classifier. Heuristics indicate a payment redirection lure, suggesting the document aims to trick users into changing financial instructions. An external URI was found pointing to a suspicious domain, likely part of the phishing infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE

Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
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=s+name+video+status++share+chat PDF link annotation
- https://cdn-cms.f-static.net/uploads/4404727/normal_5fa4b046e22fc.pdfIn PDF document text
- https://rofizikijomosuj.weebly.com/uploads/1/3/4/0/134012810/zojinimobemesuruxof.pdfIn PDF document text
- https://joluduloj.weebly.com/uploads/1/3/4/2/134266967/048dc4870.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374843/normal_5fb2cb6ad36e2.pdfIn PDF document text
- https://lobusuzagoti.weebly.com/uploads/1/3/4/4/134470260/wilekevepi-vilasip.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4368468/normal_5fdec96c052b2.pdfIn PDF document text
- https://cdn.sqhk.co/norifasil/ojhzvhd/zombicide_tactics_shotguns_wiki.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/ganubifirigevi/20201760898.pdfIn PDF document text
- https://s3.amazonaws.com/nerugiraxura/37197430859.pdfIn PDF document text
- https://s3.amazonaws.com/dejazuvorira/wifi_booster_terbaik_apk.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_off0000eabe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEABE	5312 bytes
SHA-256: `4c3bb31d9112d908d47770612ea68f0e180a007ed5d158cd28f4f966c03300d4`
`font_01_sfnt_off0000fca8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCA8	11200 bytes
SHA-256: `db67461b820a95e4c2e72af8f8ad694dc5b2a79a36db3a82bda8755186b00e00`

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