PDF malware analysis — malicious · c1a409d1d1a72e4d

MALICIOUS

PDF

77.2 KB Created: 2021-02-24 00:57:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 682346235a3eca2b9be050f7cc65ee3f SHA-1: 2cb2af13b8a586e03a6d3a60b98fb9728275909a SHA-256: c1a409d1d1a72e4da1101460f8899ca4871875f45c840b75fd18e07460c0a280

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with the primary one being https://jottigo.ru/wix?keyword=graphing+nonlinear+equations+worksheet, suggesting a phishing or malware distribution lure. The document body, though partially obfuscated, appears to be related to educational content, likely a deceptive tactic to encourage downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

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://jottigo.ru/wix?keyword=graphing+nonlinear+equations+worksheet
- http://icub.tech/89382670320afga0.pdf
- https://cdn.sqhk.co/telupiza/dijhhjV/51238224493.pdf
- https://cdn.sqhk.co/baxotonad/ijZTUii/joker_ringtone_download_pagalworld_tik_tok.pdf
- https://cdn.sqhk.co/dinigivo/shdiijf/35070001792.pdf
- http://steelsho3.club/145957948099evyt.pdf
- http://wopebexe.66ghz.com/35439069436.pdf
- http://datingdate.site/article_371_j_hyderabad_karnatakapew22.pdf
- http://wusodopepufex.66ghz.com/89348122292.pdf
- http://bnatural.space/dinh_gio_s_ngy_khn_lm_l_aiblp7o.pdf
- http://zdorovienashevse.xyz/kuwarumusowitolekexonelite88y4.pdf
- https://static.s123-cdn-static.com/uploads/4464870/normal_5fee95477719f.pdf
- https://cdn.sqhk.co/rowavarop/dqXl7gd/76132441146.pdf
- https://cdn-cms.f-static.net/uploads/4385869/normal_601104712a278.pdf
- http://xomuxeje.22web.org/lufarizipevarefoviwa.pdf
- http://luchdobro.site/british_council_esol_worksheetsp3je2.pdf
- https://static.s123-cdn-static.com/uploads/4371808/normal_5fdd854e5a412.pdf
- http://bagajuz.iblogger.org/happy_wheels_2_apk.pdf
- https://cdn-cms.f-static.net/uploads/4420765/normal_601de66c4a271.pdf
- https://static.s123-cdn-static.com/uploads/4487382/normal_5fdf624dd6b75.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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_off0000ef71.bin` `936d46c01b51fed6ef3fb2ea66fb47c8f958e9b8b9898ab8ae9232f667264422`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF71	5396 bytes
`font_01_sfnt_off000101d4.bin` `aa7dd8fa73dcbcb1a6fd6b667076d0e9f2cc6c5c8abd7aab486f8f42f86aa3e8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101D4	11564 bytes

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