Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e19e40cb7fc55c0…

MALICIOUS

PDF

90.5 KB Created: 2021-03-07 05:39:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef5357e01dedb61ac11dd33938f7153a SHA-1: d987c13d8257951565be5d61c46743368f3981e3 SHA-256: 8e19e40cb7fc55c0519e7d9e07a824920c69ee00d96be83df43e99c2c71987ec
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for phishing or redirecting users to malicious sites. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates a social engineering attempt to defraud the user, likely by directing them to one of the embedded URLs. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest a potential for embedded JavaScript or other exploit mechanisms to facilitate the scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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=que+vivan+los+tamales+food+and+the+making+of+mexican+identity+pdf
    • http://jusukigib.sportsontheweb.net/i_pace_max_charge_speed.pdf
    • https://cdn.sqhk.co/sepagumal/hibgheK/free_antivirus_software_for_laptop_2020.pdf
    • https://ketadamofexawun.weebly.com/uploads/1/3/5/3/135349072/d43c38cd63aad68.pdf
    • https://mevemedetu.weebly.com/uploads/1/3/1/8/131871578/zaxupokapabino_jawemi_kufap_saximegefelosur.pdf
    • http://vivekawiga.sportsontheweb.net/zumefum.pdf
    • https://cdn.sqhk.co/kajutizikodu/gdWljir/stick_fight_stickman_battle_fighting_game.pdf
    • https://pibigetikuke.weebly.com/uploads/1/3/5/3/135387636/fusoloro.pdf
    • https://pulatufulufu.weebly.com/uploads/1/3/4/6/134610330/8d8cae62785e32a.pdf
    • https://posilukununafux.weebly.com/uploads/1/3/4/4/134498017/widozofejexukizofibo.pdf
    • http://kanaxade.mygamesonline.org/dojirivovomugobikimobin.pdf
    • https://cdn.sqhk.co/loganidob/dcQu4Tb/tukapofurajojeturasilara.pdf
    • https://cdn.sqhk.co/xemugugafot/gXjeXij/get_my_business_on_apple_maps.pdf
    • http://madoxorijegobe.sportsontheweb.net/jibajosatutuvilan.pdf
    • https://cdn.sqhk.co/vesagivara/cro0Xva/pakefibedudafesal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/masevewi/wufanatumakijutebi.pdf
    • https://s3.amazonaws.com/sajatesawodiji/bsc_second_year_maths_book.pdf
    • https://s3.amazonaws.com/wudibirewuduto/volume_of_rectangular_prisms_worksheets_answers.pdf
    • https://s3.amazonaws.com/lanaladu/formal_and_informal_assessments_examples.pdf
    • http://vitimalu.rf.gd/harbor_freight_bunker_hill_security_camera_review.pdf
    • https://s3.amazonaws.com/nuxepiduded/d_link_dsl-_2730u_software.pdf
    • http://temipaz.epizy.com/84937980938.pdf
    • http://vegubom.atwebpages.com/tascam_dr-05x_portable_digital_recorder_reviews.pdf
    • https://s3.amazonaws.com/votawawo/waterfall_chart_excel_template_2010.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_off000122fc.bin
8ff367781a4edfc9cd4118c6f0f367db7b5d1ffa78dadefa83ec47d0c0dc340e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122FC 5828 bytes
font_01_sfnt_off000136c8.bin
cbe9b4cfef7f9db00c57c040b7d78b6b9987a7f0d5f22e316d90766031c01a0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136C8 11028 bytes

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