Malicious PDF — malware analysis report

Static analysis result for SHA-256 39e4e2e404010882…

MALICIOUS

PDF

78.4 KB Created: 2021-04-07 14:51:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84445388843894fcbd20d444cd3b6b99 SHA-1: 36624a318ffe4df730b5608650425cd3a04985bb SHA-256: 39e4e2e404010882624b41ac66075e4b80f79f9e80d25e5cb11b7c32c42c2376
144 Risk Score

Malware Insights

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

The PDF contains heuristics indicating an advance-fee scam lure, specifically mentioning lottery/prize language and parcel delivery requirements. It also embeds an external URI pointing to a suspicious domain, likely intended to host a malicious payload. The ML classifier and ClamAV detection strongly suggest malicious intent, consistent with a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dafemum.ru/award?keyword=story+central+2+pdf
    • https://cdn-cms.f-static.net/uploads/4495976/normal_601f268eeb4b1.pdf
    • http://raxejudesezix.scienceontheweb.net/fulewujudozo.pdf
    • http://bixesifebara.iblogger.org/after_marriage_romantic_urdu_novels_free_download.pdf
    • http://canonsburglake.com/97885314248oukq9.pdf
    • http://rostov-mobile-doctor.ru/ophelia_piano_sheet_music_freehey3d.pdf
    • http://fastpeysistem.online/semuzatifujhi9ye.pdf
    • http://porizaritofo.mypressonline.com/advertising_campaign_strategy_5th_edition.pdf
    • http://tikovg.xyz/what_does_yes_mean_in_textxp02a.pdf
    • https://cdn-cms.f-static.net/uploads/4383923/normal_60432f3ef17d1.pdf
    • https://cdn-cms.f-static.net/uploads/4486206/normal_603ea42f822d5.pdf
    • http://kungfumalibu.com/dorebasbcm8.pdf
    • https://cdn-cms.f-static.net/uploads/4366305/normal_60365e6534524.pdf
    • http://gosejoligezo.iblogger.org/bootstrap_modal_form_input_focus.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xusixuxoribixe.rf.gd/nuwibetepedenapagan.pdf
    • https://s3.amazonaws.com/kitakilesa/sefazabubomaxa.pdf
    • http://bomigezi.epizy.com/nagizegigajobu.pdf
    • https://s3.amazonaws.com/wiwuxot/pidixut.pdf
    • https://s3.amazonaws.com/domegagowevag/zexev.pdf
    • https://s3.amazonaws.com/tipikaxe/quickstudy_english.pdf
    • http://wepogevadapafa.atwebpages.com/automatic_control_system_barapate.pdf
    • https://s3.amazonaws.com/legesiliv/pediatric_inguinal_hernia_guidelines.pdf
    • https://s3.amazonaws.com/nonabafat/draw_tite_activator_4.pdf
    • https://s3.amazonaws.com/fonazuzixagizir/how_to_fix_paper_jam_in_epson_printer_l220.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_off0000ed2c.bin
b579263388dd22f14bf7ecda9f9c7682ba88a4d85b4270ee0e4aae9c6731a444		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED2C 5308 bytes
font_01_sfnt_off0000ff5b.bin
3ee0f1aff066f7990711eac95cddce873862584155f2bbb86d69402e6eae508a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF5B 14524 bytes

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