PDF malware analysis — malicious · 43730888a1a28979

MALICIOUS

PDF

76.0 KB Created: 2021-02-14 17:02:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a70cde5e413ddae01d69b3857018d43d SHA-1: 9702f4e46440be9dd480e5d98708dfc5110e521b SHA-256: 43730888a1a28979308d03db69c2af957def1df13b7e18bbeb1f61377142eb78

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for further exploitation.

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://druttle.ru/wix?keyword=last+day+on+earth+bunker+alfa+code
- http://pihodze.com/536017780257pez3.pdf
- https://cdn.sqhk.co/simikimira/i3ieTtA/vikeregavupu.pdf
- https://cdn-cms.f-static.net/uploads/4459185/normal_5fd78d53168cf.pdf
- https://cdn.sqhk.co/xekejegixawo/9wiepFQ/grass_cutter_tractor.pdf
- http://detonic-hypertonie.website/case_study_whale_evolution_answersh46wt.pdf
- https://static.s123-cdn-static.com/uploads/4469355/normal_5ffa962dc773a.pdf
- http://revershjtb.site/3_billy_goats_gruff_coloring_sheetsovle5.pdf
- http://expressvpn.store/4468558221240lfc.pdf
- https://cdn-cms.f-static.net/uploads/4455642/normal_5fd92be4b6067.pdf
- https://static.s123-cdn-static.com/uploads/4447447/normal_5fc7a9cb63845.pdf
- http://itfamily.pro/91955269345h7hyy.pdf
- http://busurman.space/guide_ne_demek_trkedebj5bv.pdf
- https://static.s123-cdn-static.com/uploads/4377100/normal_5fe2b638333f3.pdf
- http://s7hmus.org/reformed_church_near_mefy1zp.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/petuzutemixuvod/1922505192.pdf
- https://s3.amazonaws.com/wunupalezozerud/magento_2_get_helper_in_template.pdf
- https://s3.amazonaws.com/banula/37862664343.pdf
- https://s3.amazonaws.com/sezewu/sokakajenidotewojumulu.pdf
- https://s3.amazonaws.com/fexuror/2268834305.pdf
- https://s3.amazonaws.com/fezenur/amazon_quiz_answers_oneplus_7_pro.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_off0000ec4f.bin` `cf57c9c38378a2af921836bfe9d2af68274712862c8bbac8961f53b7501bfa1e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC4F	5356 bytes
`font_01_sfnt_off0000fe8b.bin` `e4d556dca24322987cd5604a726709be10681c0c426f58f126b4e502d374b712`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE8B	10668 bytes

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