PDF malware analysis — malicious · a1e7ff91a5177588

MALICIOUS

PDF

68.8 KB Created: 2021-02-19 17:09:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7173206e27d3de5910241e854af366cf SHA-1: 2fb07e231858be6e9a746ef137eaaf99f41803de SHA-256: a1e7ff91a51775884acbe7714b4e5ea2a14f0e57dca01e72674c729a38c6834f

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded URL `https://yafferge.ru/wix?keyword=rethink+your+drink+science+project` is flagged as malicious. The document body, though heavily obfuscated, appears to relate to a 'science project', likely a lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://yafferge.ru/wix?keyword=rethink+your+drink+science+project
- https://cdn.sqhk.co/sawowudin/iiziaha/origami_tutorial_easy_ninja_star.pdf
- https://cdn.sqhk.co/buzulexoxuve/jgheuid/gomolixibule.pdf
- https://cdn.sqhk.co/niramojiga/Yijjeig/1721225713.pdf
- http://zamodinije.22web.org/tuwomo.pdf
- http://joxoganatiwo.iblogger.org/cake_boss_song.pdf
- https://cdn.sqhk.co/mapelimujeku/jg0zYGJ/30585305182.pdf
- https://cdn.sqhk.co/natefisaka/U5PF2ji/mini_golf_world.pdf
- https://cdn.sqhk.co/lasanamemego/fqhjhgK/kobibawiw.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/nonipesikiri/login_form_in_html_template_free.pdf
- https://s3.amazonaws.com/vifusupegiza/wefujipasax.pdf
- https://s3.amazonaws.com/povodijirig/pujeguw.pdf
- http://jorowubibe.epizy.com/school_administration_definition.pdf
- https://s3.amazonaws.com/gogonof/como_atualizar_android_tv_box_mx9.pdf
- https://s3.amazonaws.com/tikofaketonub/buscar_mi_dispositivo_android_app.pdf
- https://s3.amazonaws.com/zikeko/meaning_of_comprehensive_agrarian_reform_law.pdf
- https://s3.amazonaws.com/xufoxorog/nier_automata_farming_guide.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d288.bin` `ef066c6d8a310e8db7fee247316a19c8a27e9a04e6ac2d22f407f022292cec99`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD288	5168 bytes
`font_01_sfnt_off0000e42b.bin` `c3f49fcbe5083d04ed715bb5fd5f22379257de8577777b53d52c5a7a78c9784c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE42B	9856 bytes

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