Malicious PDF — malware analysis report

Static analysis result for SHA-256 494d2b0f56931b6d…

MALICIOUS

PDF

78.3 KB Created: 2021-03-25 15:18:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e449aac53800748a8316e84f44358e63 SHA-1: de4b1f2261ca1d6ae87743ab9fc9106b450dbd5f SHA-256: 494d2b0f56931b6d13718f234d2e046e813e70ba310bb5e9b21633e9b4fa12d2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'resalured.ru', which is likely used to redirect the user to a phishing site. The PDF structure and embedded content suggest it's designed to lure users into clicking 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://resalured.ru/wix?keyword=what+is+municipal+center+va+beach
    • https://bolomekedi.weebly.com/uploads/1/3/4/7/134769876/pojasowatowadujumile.pdf
    • https://cdn-cms.f-static.net/uploads/4503617/normal_602169dede720.pdf
    • https://dutosagow.weebly.com/uploads/1/3/0/7/130775111/7129686.pdf
    • https://cdn-cms.f-static.net/uploads/4382617/normal_6015b4c82c631.pdf
    • https://bododomeliba.weebly.com/uploads/1/3/1/4/131408614/1892944.pdf
    • https://gabubogoko.weebly.com/uploads/1/3/3/9/133997439/temiveboturovar_xiniduvexalaxa_xunajewanefaf_zilukinenejon.pdf
    • https://jogemubo.weebly.com/uploads/1/3/4/3/134321321/2564161.pdf
    • http://nufivuzelikonax.getenjoyment.net/calentadores_solares_de_agua.pdf
    • https://tiriwubesunadew.weebly.com/uploads/1/3/0/7/130739346/kupawipiv.pdf
    • https://badobokitevobux.weebly.com/uploads/1/3/0/9/130969603/kowuwusowixogim-muzezi-rekojitadal.pdf
    • http://nupesupo.mypressonline.com/what_is_a_red_tagged_house.pdf
    • http://samafutanub.mypressonline.com/mawewopovepen.pdf
    • https://xujufefar.weebly.com/uploads/1/3/1/4/131483110/4021919.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/natewared/44207978824.pdf
    • https://s3.amazonaws.com/ganubifirigevi/69956267352.pdf
    • https://s3.amazonaws.com/pajukovuxetu/a_bug_s_life_game_ps1.pdf
    • https://s3.amazonaws.com/meludav/banco_bpm_spa_annual_report_2017.pdf
    • https://s3.amazonaws.com/gezizefefififa/samsung_un43j5200af_disney_plus.pdf
    • https://s3.amazonaws.com/perurulexi/kaun_banega_crorepati_episode_60.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.

FilenameKindSourceSize
font_00_sfnt_off0000f367.bin
6858380fdb7ce1508957621950c49b03a04d9cc846324be3f1577619b78a8c16
pdf-font-stream PDF embedded font (sfnt) at offset 0xF367 5388 bytes
font_01_sfnt_off0001059a.bin
c4380768d710bb3bdd8fecc7e8cb47d975e68407032105a598331c599f43eba1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1059A 11292 bytes