Malicious PDF — malware analysis report

Static analysis result for SHA-256 042914d070d062ef…

MALICIOUS

PDF

76.3 KB Created: 2021-04-03 05:34:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: e4179fe10acf924462d9b468267ce02f SHA-1: 29380f528830c3374d3c0b131f0efa39ab23431d SHA-256: 042914d070d062ef079840b6551fc36b7870f77890f0d5b538ed415aabf36e48
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. The document body, though heavily obfuscated, suggests a lure related to 'formas ser bachiller pdf'. The embedded URL points to a suspicious domain, likely serving a malicious payload or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/award?keyword=formas+ser+bachiller+pdf PDF link annotation
    • https://cdn.sqhk.co/pogadidotilu/igyOgiM/banobuwonukofune.pdfIn PDF document text
    • https://cdn.sqhk.co/kizajituxab/5gchgtd/neverending_story_song_sheet_music.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380379/normal_5fdc79368778e.pdfIn PDF document text
    • http://fisurigata.22web.org/hydrostatic_pressure_experiment_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474170/normal_602c09e1e6db2.pdfIn PDF document text
    • http://naturaleone.space/get_the_guyf9qzy.pdfIn PDF document text
    • http://vclean-sale.shop/zupush086p.pdfIn PDF document text
    • https://pevidutapare.weebly.com/uploads/1/3/0/7/130740538/xukoridijokupovunot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498330/normal_605ee41caff6c.pdfIn PDF document text
    • https://cdn.sqhk.co/daxegajok/hdnReRz/crispy_smashed_potatoes_food_network.pdfIn PDF document text
    • https://cdn.sqhk.co/potiribuwuf/ahhgfhc/rejoripipelezokukus.pdfIn PDF document text
    • http://barcaporirternet-interbank-pe.com/429418281935ejeq.pdfIn PDF document text
    • https://donimafu.weebly.com/uploads/1/3/5/3/135395233/0184c270ec8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xivobotaxonid.epizy.com/35337957728.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/bovuvevavogufawena.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/ejercicios_resueltos_estadistica_3_eso.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/cellular_structure_and_function_section_3_answers.pdfIn PDF document text
    • http://xuxixezatazifax.epizy.com/block_game_free_for_mobile.pdfIn PDF document text
    • http://kagomovibinat.rf.gd/ap_lang_rhetorical_analysis_essay_example_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/6511960083.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/how_to_install_evenflo_tribute_lx_car_seat.pdfIn PDF document text
    • http://xigilozixorod.epizy.com/weather_report_in_halbarga.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_off0000e968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE968 5488 bytes
SHA-256: e669a27e5c7610940b4e74769e0644a5097e1905e5ecb2241b036c65b0d5e609
font_01_sfnt_off0000fbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDD 11904 bytes
SHA-256: 3c508888f1e15e595f50a3479481f2c68998cb6a1034b8286c5826e3586f0696

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