PDF malware analysis — malicious · 549f26a1535fd417

MALICIOUS

PDF

75.5 KB Created: 2021-03-20 02:19:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 071dc00415587217e5ac4c3134fb473a SHA-1: 5bf8249204b43eaf06372b262e971b1dbd179a10 SHA-256: 549f26a1535fd4174b75f0fddd3287c0c6d87315317ff666616aeb92d9467d69

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to educational worksheets, which is a common tactic for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/wix?keyword=proportional+graphs+7th+grade+worksheets
- http://nenodipemuxok.mypressonline.com/87801614998.pdf
- http://larokamexi.sportsontheweb.net/fipipagefurojogajesen.pdf
- http://mazers.fun/10249870010n66p6.pdf
- http://melomone.scienceontheweb.net/how_to_repair_washing_machine_drain_button.pdf
- http://resokipuga.getenjoyment.net/couper_un_en_deux_pages.pdf
- http://selectgetc.top/jodipavedinapixevetedavx45dz.pdf
- http://lnstagramverifycentre.com/rusted_warfare_mod_apk_downloadhqhaa.pdf
- http://razvivatel.blog/71660651377421ff.pdf
- http://whitecheat.xyz/art_lesson_plan_ideas_for_kindergarten5hsun.pdf
- http://vajogeboru.iblogger.org/95693927813.pdf
- http://farijizibeke.iblogger.org/56374321341.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://zozadugaweguj.epizy.com/rafodexopajegipavejimi.pdf
- http://perexuwofogefo.onlinewebshop.net/starcraft_2_legacy_of_the_void_brutal_walkthrough.pdf
- http://lamupilabixekuw.epizy.com/49259482453.pdf
- http://zividovapajawuv.epizy.com/relion_ultima_test_strips_discontinued.pdf
- http://zijuzul.epizy.com/day6_when_you_love_someone_lyrics_translation.pdf
- https://s3.amazonaws.com/ropuba/xbox_live_minecraft_pe_android.pdf
- http://paluluw.epizy.com/how_much_can_you_earn_as_a_twitch_affiliate.pdf
- https://s3.amazonaws.com/kefefetafij/can_you_program_a_lexus_key_fob.pdf
- https://s3.amazonaws.com/legipalofi/lijufota.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_off0000e7b4.bin` `94da530f2de3b7fd8ec6f9a8e8e1b141b512b951e861dfdb1e796a6da9dcd438`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7B4	5456 bytes
`font_01_sfnt_off0000fa53.bin` `4aaa8481e13ca2c115b1866398bef324d8c6baeb63e94eba431576a7140aca53`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA53	11236 bytes

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