PDF malware analysis — malicious · a8817bdf5940cfd2

MALICIOUS

PDF

75.7 KB Created: 2021-02-23 03:01:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f3dd3bb598461c435314f0e932c69bbb SHA-1: bcfe9d471888c9f0ebc8d2108afc454318cc3c5f SHA-256: a8817bdf5940cfd2441f8ed2fc1192664a013b1b0958393c99cfaa7e5479b3e2

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://maypoin.ru/wix?keyword=i+vs+me+worksheet+pdf, is a primary indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit vulnerabilities or trick the user into visiting the malicious link.

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://maypoin.ru/wix?keyword=i+vs+me+worksheet+pdf
- http://acupofjacob.com/one_good_turn_deserves_another_story_reading_streetqq22i.pdf
- http://zelopaqq.xyz/gavafugiwetapubaritukia70dz.pdf
- http://myfirstsite.xyz/attack_on_titan_tribute_game_not4kez.pdf
- http://rebelliona.online/fegowatefefakakorivii4sfp.pdf
- http://zhenskiizhurnal.ru/multiplying_and_dividing_fractions_problems_with_answersjter4.pdf
- http://artrosil.xyz/84741861211tdkth.pdf
- https://cdn.sqhk.co/savageven/jhhamjj/18719103188.pdf
- https://cdn.sqhk.co/pawekenu/ijkjjj9/49500800845.pdf
- https://cdn.sqhk.co/divojimo/c3g2Rns/maze_runner_reunion_2020.pdf
- http://megantv.site/possessive_nouns_worksheets_with_answers_grade_6sthy6.pdf
- http://wei-nmvc.com/aviation_weather_services_handbooko4vj1.pdf
- http://reassurez-moi-fr.info/logical_connectors_exercises_with_answersmwrd3.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://xokutamewa.rf.gd/jerim.pdf
- https://s3.amazonaws.com/sazixipame/kpop_group_quiz_2019_answers.pdf
- http://xatudoxi.epizy.com/latex_creating_templates.pdf
- https://s3.amazonaws.com/putelekireza/century_2100_tens_unit_lead_wires.pdf
- https://s3.amazonaws.com/dorobukasawituw/switch_activity_android_kotlin.pdf
- https://s3.amazonaws.com/ditiruz/75558131739.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_off0000eca1.bin` `610368faa7cf697d0e556747a4d4a5664d2aee0dbb36268b31bd0f76395a2a9c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECA1	5192 bytes
`font_01_sfnt_off0000fe3a.bin` `661b10774457918385bf0bf0f5a44114314fa82902350b9e63b1a00e9f53baa4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE3A	10276 bytes

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