Malicious PDF — malware analysis report

Static analysis result for SHA-256 b187f65f86f014c2…

MALICIOUS

PDF

75.4 KB Created: 2021-04-20 22:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41931be92907a290c19f1d8ef351e68e SHA-1: b093126b1f4bba349717a432b998d19d0cb309e7 SHA-256: b187f65f86f014c27832a6fce6ad5d7d929cf0ee2cbd7133eee2bbc1b77b8cbd
136 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by a machine learning classifier and ClamAV. It contains heuristics indicating an advance-fee scam lure, presenting language related to lotteries or prizes combined with parcel delivery requirements. The document also embeds external URIs, with the highest priority IOC being a link to 'xezojetit.ru'. No scripts were extracted, but the presence of embedded URIs suggests a phishing attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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://xezojetit.ru/strik?utm_term=can+you+change+the+color+of+a+kitchenaid+mixer
    • http://muwiduvepobuz.mygamesonline.org/22043551270.pdf
    • http://lowusonuraku.mygamesonline.org/glencoe_geometry_chapter_8-2_answers.pdf
    • http://tenipimutav.mywebcommunity.org/gokasid.pdf
    • https://cdn.sqhk.co/nowavutu/ZxXk4gf/61374678270.pdf
    • https://cdn.sqhk.co/tovitaxani/p5Hgfhd/ordinal_numbers_esl_worksheets.pdf
    • https://cdn.sqhk.co/wodelaganav/jdghM63/vawebilomelipexivenuf.pdf
    • https://cdn.sqhk.co/pegebatanuz/hyDjjhd/the_oregon_trail_american_settler_mod_apk.pdf
    • http://raxewaponoxiv.mygamesonline.org/customer_service_assessment_test_questions_and_answers.pdf
    • https://cdn.sqhk.co/jinavefajevo/ijjfjji/cross_stitch_embroidery_machine.pdf
    • https://cdn.sqhk.co/merabuvi/igijpjb/land_of_doran_mod_apk_1._0._50.pdf
    • https://cdn.sqhk.co/kukusagufo/jgFjfWb/21593351603.pdf
    • https://cdn.sqhk.co/feguzuvubut/J9hehhg/download_game_epic_skater_2.pdf
    • https://cdn.sqhk.co/kiribikiv/gchf4ZA/amtrak_routes_from_chicago_to_texas.pdf
    • https://cdn.sqhk.co/guzamuvi/jhhagc2/meligedekezulodibono.pdf
    • https://cdn.sqhk.co/ditetona/jeeRMjf/73951307347.pdf
    • http://rapiwanijisage.scienceontheweb.net/norma_oficial_mexicana_de_cirugia_ambulatoria_2020.pdf
    • https://cdn.sqhk.co/disonixures/Kii6PRp/givuxitizuminanijufaf.pdf
    • http://liwadaxezaf.getenjoyment.net/xapoduvofov.pdf
    • http://worabipupe.mypressonline.com/7046033470.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://makakanow.onlinewebshop.net/mnemonic_dictionary_free_download.pdf
    • https://s3.amazonaws.com/gixirojozogufux/bandukwala_game_app.pdf
    • http://bodegifu.atwebpages.com/what_are_the_elements_of_film_scorer_do.pdf
    • https://s3.amazonaws.com/labitajaxatufib/ny_giants_latest_injury_report.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_off0000e7ac.bin
7502861ed06cbaf03bbc4e6f41c6f7e1e0b023dcf20cddbff23853be42a06568		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AC 5396 bytes
font_01_sfnt_off0000f9e5.bin
4b949cdfc21643d79a64d122f206681e971517821977551fdc2f05a67abc1de0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E5 11228 bytes

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