Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b908f5b48aa7daf…

MALICIOUS

PDF

78.3 KB Created: 2021-02-18 06:37:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1eaef38547aa78fa2a5cd051d35855bf SHA-1: 93fb69fddbbee052a2a864f4aa287d952b591572 SHA-256: 9b908f5b48aa7daf80211627fa8099e61b9ee256f802d2efec8ddc23b3073bdb
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=romeo+and+juliet+balcony+scene+worksheet PDF link annotation
    • http://muzhskoizhurnal.ru/scap_security_guidetylux.pdfIn PDF document text
    • http://fullhp.info/feguvobigopigedakajakalokk206e.pdfIn PDF document text
    • https://cdn.sqhk.co/zezegawutogu/KgcCuFG/stickman_shooter_mod_apk.pdfIn PDF document text
    • http://update-win20.online/motorola_talkabout_t5300_range4r4kz.pdfIn PDF document text
    • http://pipvip.ru/afr-_2000_regulator_manual84d0y.pdfIn PDF document text
    • https://cdn.sqhk.co/doxowite/ibNfNih/vejejokavoragulasojop.pdfIn PDF document text
    • http://sait-ok.ru/i_spy_worksheetskz3vy.pdfIn PDF document text
    • http://workmonster.net/53153976050u1et6.pdfIn PDF document text
    • https://cdn.sqhk.co/vozedolurezu/jWh8ifB/dash_color_run_st_lucia.pdfIn PDF document text
    • http://vk-settings-change.online/stumble_guys_multiplayer_royale_iosn7wi1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dimazobuxijema.epizy.com/glass_sword_victoria_aveyard_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/36935790671.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/bruel_and_kjaer_2250_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/binomial_probability_examples_with_answers.pdfIn PDF document text
    • http://jenesigafepi.epizy.com/roland_backhouse_algorithmic_problem_solving.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/sprained_ankle_or_broken_ankle_yahoo_answers.pdfIn PDF document text
    • http://rebubokinore.epizy.com/jilogu.pdfIn PDF document text
    • http://xetoluwe.epizy.com/arma_2_dayz_map.pdfIn PDF document text
    • http://vuzajakexe.epizy.com/arnold_chiari_malformation_life_expectancy.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_off0000f500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF500 5660 bytes
SHA-256: 646bde0fe2b746daea14ce59146ca3a66d4ca184fb22f57028bb2ae58bbea463
font_01_sfnt_off0001082e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1082E 10328 bytes
SHA-256: 454c8187e0094c2096883ca489f969e9c14b5fb2d2766a51e55610e5150821c1

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