PDF malware analysis — malicious · ed5871c650890f9a

MALICIOUS

PDF

81.3 KB Created: 2020-12-30 00:36:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: c59cbc02aa3e94b70a3764e8f2120a5c SHA-1: ee89596d2c013623fa41fb2172b77c26aa0039e0 SHA-256: ed5871c650890f9ab809c451dc0939d0cf9fdda1c9cd3c22d33351501b8a5f7b

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a large number of external links, indicating a link farm or phishing attempt. The primary malicious URL identified is https://trafftec.ru/strik?utm_term=furry+character+maker, which is likely used to redirect users to further malicious content. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation 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://trafftec.ru/strik?utm_term=furry+character+maker PDF link annotation
- https://faripolugariwel.weebly.com/uploads/1/3/1/4/131453512/sowalojurenok.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412174/normal_5fab99c166ec8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378155/normal_5f91c4863f998.pdfIn PDF document text
- https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/8089116.pdfIn PDF document text
- https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/d79f6e7e2d3.pdfIn PDF document text
- https://fekoguto.weebly.com/uploads/1/3/4/4/134491689/fojazoziwusase.pdfIn PDF document text
- https://tadafami.weebly.com/uploads/1/3/4/3/134386911/3772432.pdfIn PDF document text
- https://jitebemaduk.weebly.com/uploads/1/3/4/6/134692965/katik.pdfIn PDF document text
- https://fimegelepa.weebly.com/uploads/1/3/3/9/133999933/wuvetitasuzek.pdfIn PDF document text
- https://pirowefe.weebly.com/uploads/1/3/4/4/134444143/8980953.pdfIn PDF document text
- https://dekedenavit.weebly.com/uploads/1/3/4/6/134612093/9733367.pdfIn PDF document text
- https://cdn.sqhk.co/suwezuzifu/thjhjel/xalirajoviluve.pdfIn PDF document text
- https://cdn.sqhk.co/feneradebeza/jhSiehe/traffic_racer_bike_mod_apk_download.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/pukiza/zetutotesi.pdfIn PDF document text
- https://s3.amazonaws.com/mamukawaxatali/glencoe_algebra_2_practice_workbook_answer_key.pdfIn PDF document text
- https://s3.amazonaws.com/mefovu/6717959385.pdfIn PDF document text
- https://s3.amazonaws.com/wukevirenesu/pagedamuniwanunaxul.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d84e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD84E	12240 bytes
SHA-256: `09d79c958beeddd69773bb38abd892db8b43e79582c2e3b31fcf57448bd22ee6`
`font_01_sfnt_off000100ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100AB	4948 bytes
SHA-256: `00c432cde2834024413171dc207e299f0f84cb95d1cc680ac5ae4c2fcb50e12f`
`font_02_sfnt_off00011161.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11161	11192 bytes
SHA-256: `aac5b62b7d5a613638da620a5b1e4431b81cd162b8730f8c809fd2fd389d5249`

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