Malicious PDF — malware analysis report

Static analysis result for SHA-256 5da715babcd5c39f…

MALICIOUS

PDF

92.8 KB Created: 2021-04-01 02:32:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a9fc6b453ced8734d113313f05aa6f9c SHA-1: 90ac6addbc784e73c6504ddef592d95a51c5d039 SHA-256: 5da715babcd5c39f477a23f029562d8be09d9f37d1ef3140b001869b08efaf4b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9988

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://midufefew.ru/wix?keyword=music+theory.net+key+signatures PDF link annotation
    • http://mujizitodosi.22web.org/first_law_of_thermodynamics_practice_problems_answers.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/jobavo/lamokomugawabimidox.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/prentice_hall_algebra_1_online_textbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cb6a995-6d5c-493e-986a-84a1c88bf753/rexegobepagosepe.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/32723535951.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/banuxizaxovelipeluli.pdfIn PDF document text
    • http://vunatilun.epizy.com/73384660626.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/conditional_loan_approval_letter_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb6ad4fc-855e-425d-a657-af4c0fa0892a/didedoxazef.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/jivasiwetosupi.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/wonopelukanitekil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffe8140f-c592-47a3-bcf7-ec00a4f3a876/dd_4e_races_and_classes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6168ac9-64fe-4168-a2ab-fa467f243f67/how_to_factory_reset_lg_g2_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/wijazuligabofam.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/58730043885.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e293d13-408b-411b-a4ad-5a7d801f3d34/woxuruwunekupagezoxupekej.pdfIn PDF document text
    • http://saxowuwu.rf.gd/level_5_the_body_penguin_readers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/899170f9-7865-4eac-95ce-99ffc542c9e4/brown_v_board_of_education_effects_today.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/9361623310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbb39ddb-d6ab-4dd6-8c21-cc07b620ddc5/26200215518.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/62152986591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/592a3051-2d55-41d2-bb73-6d30b59e65df/javororedafomu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e052adec-924a-4da0-9ca4-3b73040d972f/wheel_of_time_reading_order_new_spring.pdfIn PDF document text
    • http://susegemosesipul.epizy.com/common_sense_book_by_soham_swami.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001191a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1191A 5232 bytes
SHA-256: 0f49cbd63e9756e893e4f54b25b43db96018a7e5f788efbdd9afbed81af7d0b1
font_01_sfnt_off00012b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B00 11004 bytes
SHA-256: d3e0240a57ec6f4c05919b7c0c039481c10ce590e50aca021eb018cc37c6c2f5
font_02_sfnt_off0001509e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1509E 16120 bytes
SHA-256: 46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12

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