Malicious PDF — malware analysis report

Static analysis result for SHA-256 073ef43c7070b2b8…

MALICIOUS

PDF

76.3 KB Created: 2021-03-28 14:27:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: dde4a5933126e3d6b924081f9ddc9211 SHA-1: bdded32507ec01939734d2ac64c9473b9e70f5b6 SHA-256: 073ef43c7070b2b8797a57e3f5e1c435c7686ae8db8637ec8950b78ca3a3b514
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to suspicious domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a Christian prayer, likely to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/wix?keyword=la+salve+oracion+cristiana PDF link annotation
    • http://shoppermarket.online/bypass_proxy_software_free6oahw.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/nafivubiwugewipel2q9ve.pdfIn PDF document text
    • http://fakts.design/gapudopemufupozupa5zgul.pdfIn PDF document text
    • http://geleostone.online/14564470463gaxds.pdfIn PDF document text
    • http://kawafopi.mygamesonline.org/suremaverepevakitu.pdfIn PDF document text
    • http://hdsamara.ru/lord_of_the_rings_4k_digital_bits2kctd.pdfIn PDF document text
    • http://repair-foto.ru/wekoraxefyvi8.pdfIn PDF document text
    • http://rubyshup.space/good_attitude_meaning_in_hindirem3p.pdfIn PDF document text
    • http://bonifacy.site/64856650904s7ieb.pdfIn PDF document text
    • http://wonozudobitisog.scienceontheweb.net/39784489632.pdfIn PDF document text
    • http://kojazunupetip.mygamesonline.org/what_is_the_ratio_in_concrete_mix_design.pdfIn PDF document text
    • http://ritual-venki.online/tilubifezowinulufqe2n.pdfIn PDF document text
    • http://gratoraama.space/black_and_decker_drill_charger_home_depotskauy.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/gogawepaxumatodq6yn.pdfIn PDF document text
    • http://hairsprof.ru/505654388773et59.pdfIn PDF document text
    • http://liwexun.mywebcommunity.org/molecular_biology_exam_questions_and_answers.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/12340758557.pdfIn PDF document text
    • http://optamorem.com/75985606934ngrgu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/nekupetolagijimejolosurod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42ddf635-3b2b-4048-a39b-9ffaf821ddb8/les_miserable_movie_soundtrack_2012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efd86fa3-0303-4bec-864e-b80f736fabb9/46784503755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4413c871-6b69-4c9b-b8af-d4a798469441/are_volvos_expensive_to_repair_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/decision_makers_guide_habitual_residence_test.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/formuler_z8_user_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46034cc6-16b8-48cf-84ff-deed1b2effea/david_r._klein_organic_chemistry_3rd_ed._wiley_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc21ad80-68d2-4fdc-9ef0-d57be4762465/how_much_does_it_cost_to_replace_septic_tank_and_leach_field.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB50 4796 bytes
SHA-256: 4400ed867e608d2adabb3029afcce0c25c20a94cdde9b7092f412e06ed2f3ecd
font_01_sfnt_off0000fbb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB7 12188 bytes
SHA-256: f9d646718ce06709aac328f954d68d248ef1bfed71af406de50911e3bad27fe2

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