PDF malware analysis — malicious · 6a9af75403ceef3f

MALICIOUS

PDF

87.6 KB Created: 2021-03-16 22:27:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: 226a3d3255793ac16c5a00091899d026 SHA-1: 9fa55fffa0d3a8d87fcc2ead36b50a40402faa18 SHA-256: 6a9af75403ceef3f023d9dcee9124120999fecee9126714057fc1325ee918cec

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as phishing and trojan activity. The document body, though heavily obfuscated, contains text related to 'Eragon pdf read online', likely a lure to direct users to the malicious URL.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://dugedepap.ru/wix?keyword=eragon+pdf+read+online PDF link annotation
- https://static.s123-cdn-static.com/uploads/4428052/normal_5ffb86ea5effd.pdfIn PDF document text
- http://bagadiwep.22web.org/dc_motor_position_control.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4409113/normal_5fde73d1733d5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4407299/normal_5fcd8e9a6f1b2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454303/normal_602b5f72b0b92.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366665/normal_5fd23cd2d3413.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382189/normal_604a8e53bcd62.pdfIn PDF document text
- http://sotatetivula.iblogger.org/incorrupt_saints_catholic_answers.pdfIn PDF document text
- http://jijexuvekenim.iblogger.org/densidad_del_agua_salada_en_g_ml.pdfIn PDF document text
- http://linorusani.iblogger.org/past_simple_worksheet_with_answers.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421770/normal_603d0571d8212.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4454421/normal_6000531d57102.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://popasewunagen.epizy.com/19456447561.pdfIn PDF document text
- http://majilutiwuxas.rf.gd/bstc_2018_question_paper.pdfIn PDF document text
- https://662517ce-f374-4037-aebd-99b1dbe00103.filesusr.com/ugd/0c4177_bf43186dc955427d9f4685b7dbfa969b.pdf?index=trueIn PDF document text
- http://zovikeg.rf.gd/jezumizetevoriropi.pdfIn PDF document text
- http://tazomibege.epizy.com/define_personal_financial_report.pdfIn PDF document text
- http://wovepelifuro.epizy.com/nilegujakaliretot.pdfIn PDF document text
- http://nafabumawo.rf.gd/59389629712.pdfIn PDF document text
- http://fabavokawibawo.epizy.com/workforce_diversity_definition.pdfIn PDF document text
- https://920f4c01-5fd6-4c40-8b27-b99972fecb60.filesusr.com/ugd/d63aaf_d71f1c7cae744f88b8b813e58073c2bc.pdf?index=trueIn PDF document text
- https://a3e8d6b6-68ee-4625-a313-a25a09dbd39d.filesusr.com/ugd/312e12_c719b3dd702643a8a01478af674784cb.pdf?index=trueIn PDF document text
- http://lulawutereb.rf.gd/how_to_add_domain_alias_in_wix.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_off00010cd1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10CD1	4696 bytes
SHA-256: `54cc2de47b859c784db7103ff6357a7174666e8c4d9ec76a2ab4710ae5304e57`
`font_01_sfnt_off00011ccb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11CCB	11220 bytes
SHA-256: `efe6fe9805c67b78a5bf47036ee1f3c183a684e80400ebac2693be1cdd0ebafa`
`font_02_sfnt_off0001429b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1429B	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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