Malicious PDF — malware analysis report

Static analysis result for SHA-256 249b6326b511f4e4…

MALICIOUS

PDF

67.2 KB Created: 2020-12-09 15:15:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7a49fd6e889c89657d407dd7d8fd3809 SHA-1: 91b19a7e052ca1847e78f696dd2e1c95f60e2aff SHA-256: 249b6326b511f4e475c449b6bf7bdfd2c38863b4033c121bb00a77e7b931d74a
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 0.9997

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://traffnew.ru/strik?utm_term=chapter+5+honors+geometry+test PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379601/normal_5fab87bc235be.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc5475712facd59cec9dbbd/t/5fcbe1e664036b61439aa7bd/1607197158628/dragon_ball_z_infinite_world_pcsx2_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3ebd30e-8509-44ec-b8ef-9d25fb746c51/xosovitujatasiwetatav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a8d399-a5ec-4971-8740-0e96ec93b738/nopezinilojupiko.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/6196705395.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/rs3_herblore_leveling_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc293fe0b6b03258f403ad0/t/5fcb0cfebce7087d1ad67a75/1607142655335/724_credit_score_car_loan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ec6f604-0166-4e48-b0a3-4fa7f9b6efb1/velofekabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c3b2a9a-9f2f-4b21-8849-845b3354ea76/itziar_moncada_chamorro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fcd71ae-e6dc-4aa3-8d48-7e090ddcfe12/google_drive_spider_man_into_the_spider_verse_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/lesson_plan_template_for_kindergarten_math.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB81D 5192 bytes
SHA-256: f2435bfa38f323e1a412b42806428160fd1489e36fc75c7571e1b1cf8ae6218e
font_01_sfnt_off0000c99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC99B 12404 bytes
SHA-256: 20801bc4ebed191d18d1cc633798b6794282b141dd11cf3e9fe8f9c2df3a6d4d
font_02_sfnt_off0000f010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF010 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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