PDF malware analysis — malicious · 65896c83a642a77d

MALICIOUS

PDF

114.7 KB Created: 2021-02-07 02:43:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03

MD5: 0f08e304257c75e53e584a2befe39f0e SHA-1: 64a24c5ac330dd8b7a7e60635de49164b8ca25be SHA-256: 65896c83a642a77df43de35a5f98852285be3678f69735159daec901caed303a

116 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample was flagged by ML and ClamAV as malicious, with a high-confidence ML score. It contains embedded URLs pointing to potentially malicious domains, suggesting a phishing or malware distribution attempt. The malformed stream length heuristic indicates an attempt to hide malicious content within the PDF structure.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH

A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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://jacksth.ru/123?utm_term=waking+life+script PDF link annotation
- https://cdn-cms.f-static.net/uploads/4391302/normal_5fd8e9173d690.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4367290/normal_5fe45e334100c.pdfIn PDF document text
- http://servempieza.site/5795614130l5bms.pdfIn PDF document text
- https://cdn.sqhk.co/nujekezitifi/f1niZMn/bovesewesanelefuwovid.pdfIn PDF document text
- http://fifamarketbot.com/2019_chevy_camaro_ss_owners_manualdczev.pdfIn PDF document text
- http://detonic-italia.website/30194402300zi1jv.pdfIn PDF document text
- https://cdn.sqhk.co/daxegajok/Jjd6Agh/49614698018.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/dikobepibelun/36437087157.pdfIn PDF document text
- https://s3.amazonaws.com/bibejovixapis/tixak.pdfIn PDF document text
- https://s3.amazonaws.com/rabewiruzitewa/word_cookies_cheat_answers.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_off00018913.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18913	5260 bytes
SHA-256: `15d65778e6f6e8438e2b5acc399affe04add7da76a9926450911ae9eac74f37d`
`font_01_sfnt_off00019b25.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19B25	10312 bytes
SHA-256: `3efba2a88b1058914c38c89597a1e4121c056d834ed257ca570dc75776f1b29a`

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