PDF malware analysis — malicious · 1e277202ce2d6da3

MALICIOUS

PDF

75.4 KB Created: 2021-02-28 11:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6bf4f3dc3b0da4366bc40e84bfba3d80 SHA-1: 938d84e25e671884e927f07d5d813f77ecdf76dd SHA-256: 1e277202ce2d6da372c966efd65930fc585ed038bb776cd5d6f2cfb1a06f0e03

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, a common tactic for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially malicious sites, aligning with a phishing or malware delivery attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

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.
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://golowaki.ru/123?utm_term=scarlett+18i8+setup
- https://static.s123-cdn-static.com/uploads/4417139/normal_6000caa6b613c.pdf
- http://zuvels.xyz/bds_first_year_booksz5teu.pdf
- https://karomigotel.weebly.com/uploads/1/3/5/9/135962203/5124bd9161.pdf
- https://static.s123-cdn-static.com/uploads/4466140/normal_5ffd0e0356492.pdf
- http://kagivok.iblogger.org/gufakudujadomu.pdf
- https://cdn-cms.f-static.net/uploads/4409393/normal_60116034eae26.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/wuwabobujasivor/rurekisoporinet.pdf
- https://s3.amazonaws.com/tawosutosuxi/post_office_guide_part_ii.pdf
- http://jopasimu.rf.gd/fenosali.pdf
- http://pigozezidum.rf.gd/36513226209.pdf
- https://s3.amazonaws.com/vipuxafol/megavobixolowari.pdf
- https://s3.amazonaws.com/fexuror/sine_cosine_and_tangent_worksheet.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e017.bin` `98427bd2523ee0cefec9e554a74d72ddedef9f6a7ac9ab95f05cc2c77e019b60`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE017	2964 bytes
`font_01_sfnt_off0000eab3.bin` `c88c27d642e1a4fc781939de26a9fbe43d112d903c21660f4c15841dcd8d3e89`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAB3	5276 bytes
`font_02_sfnt_off0000fcb5.bin` `b0d2adce8e4a69957cc6b9bef5f3501ddda0ad40d3cd03933d820f5ab0213c11`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCB5	10900 bytes

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