Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc13a2494058d98a…

MALICIOUS

PDF

77.7 KB Created: 2021-04-18 20:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7001aed14454e563aa43dc04aeb76d51 SHA-1: da0a313a2c3c1f3ea5fb10e7c1a26eb49eaefe7d SHA-256: fc13a2494058d98ab74cc6e526e4cfc35c8ddc1464636659e89bd60056238a02
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://resalured.ru/strik?utm_term=sonic+nutrition+facts+shakes', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Sonic nutrition facts shakes'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/strik?utm_term=sonic+nutrition+facts+shakes
    • https://cdn.sqhk.co/gixotagokezu/rtghgjT/17604747921.pdf
    • https://cdn.sqhk.co/gabazumad/mpjjogh/bipapedaxigevisolutaj.pdf
    • https://cdn.sqhk.co/tunaluvum/auhn2Y5/fear_the_walking_dead_season_5_full_cast.pdf
    • https://cdn.sqhk.co/duvetezoje/PjfG1hc/snes9x_apk_uptodown.pdf
    • http://stassikorskyi.com/max_depree_leadership_is_an_art_quotesos263.pdf
    • http://voyazh-shina.com/reddy_heater_propane_30_000_btum8xt8.pdf
    • http://tadugebakonuged.getenjoyment.net/georgia_durable_power_of_attorney_form.pdf
    • https://cdn.sqhk.co/nuxoporerom/om1ie6r/atlantic_fleet_2.pdf
    • http://sosed.market/yamaha_rx_v573_7.18eptx.pdf
    • http://kazexajisodibu.medianewsonline.com/fujofozogiwuwuposif.pdf
    • http://chambrely.xyz/is_katherine_and_elena_the_same_person_in_real_lifewpsw9.pdf
    • http://kpupnov.pro/employee_self_evaluation_sample_answers_problem_solving51o67.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kiremefegonar/cqc_uclh_report.pdf
    • https://uploads.strikinglycdn.com/files/157c0ecb-9935-4666-8870-4e47120b28e6/ap_music_theory_test_date_2020.pdf
    • https://s3.amazonaws.com/wufujudisu/importance_of_effective_communication_skills.pdf
    • https://s3.amazonaws.com/lepefi/amos_20_software.pdf
    • https://s3.amazonaws.com/safenalavojuwu/61405164317.pdf
    • https://uploads.strikinglycdn.com/files/9e8af5ff-81e7-4727-82d5-c124265e27dc/vajadixejoka.pdf
    • https://s3.amazonaws.com/pulujolatepuv/anderta_jujur_saja_lagu.pdf
    • http://ropupifalapoges.atwebpages.com/wopemim.pdf
    • https://s3.amazonaws.com/tasufagijaremo/6089183038.pdf
    • https://s3.amazonaws.com/rujabepifar/answer_sheet_template_1-_50_word.pdf
    • https://uploads.strikinglycdn.com/files/5746aa92-989a-42d8-8359-fb1f0c76bf32/mivevexisujufomodinanu.pdf
    • https://uploads.strikinglycdn.com/files/1665dafc-d741-4220-9dff-2533e4961104/is_it_better_to_guess_or_leave_blank_on_sat.pdf
    • https://uploads.strikinglycdn.com/files/853e0244-6f0e-47ca-b5d7-3ab012890882/what_is_the_software_development_life_cycle_in_healthcare.pdf
    • https://s3.amazonaws.com/firudegix/guxedumoditukuxok.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_off0000f2d1.bin
02f6dc9b3bbab80806ed855e61499b0745d73b9f940352c589e0b420bf733b92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D1 5104 bytes
font_01_sfnt_off00010427.bin
3c99dbd37cd7c78fa108049646c97e37b1ab9542bf44a0fb47b9d47daf07f7aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10427 10912 bytes

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