Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20fa9993e1e5315…

MALICIOUS

PDF

84.3 KB Created: 2021-03-22 16:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0e23bd1ecd70083a3f47ac5cf2f2ff75 SHA-1: 381d5defe81e5934babb12fbebabc8e20e58eee5 SHA-256: c20fa9993e1e5315a82ca2afbc426614d5e0c75a1ddd49e225884f831d12185d
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 0.9994

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://crophysi.ru/123?utm_term=sonar+6+producer+edition PDF link annotation
    • http://vubitim.sportsontheweb.net/past_simple_regular_verbs_negative_exercises.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387918/normal_5fc6ffd375146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465396/normal_60580c5b881cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454971/normal_600480fbd414d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444371/normal_5fc5a0eb02bbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455659/normal_5fe183f9eac8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369920/normal_6036870c9f243.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402948/normal_5fe0bc46ef05a.pdfIn PDF document text
    • http://rakapugijumub.sportsontheweb.net/radotevefeleralerodexewof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484370/normal_602c6fab1b58a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465537/normal_60206f8ab97ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464541/normal_6021871caf09b.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/mivokozibu/sosere.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/nelaxileniz.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/how_to_train_for_your_first_crossfit_competition.pdfIn PDF document text
    • http://taroveruwidiba.onlinewebshop.net/3520567758.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/tableau_desktop_certification_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/48527582269.pdfIn PDF document text
    • http://tizeruxabono.onlinewebshop.net/hurt_feeling_report_funny.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/jacuzzi_sand_filters_for_above_ground_pools.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/negikerenobawoduno.pdfIn PDF document text
    • http://lipeporo.onlinewebshop.net/induction_and_augmentation_of_labor.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/how_do_i_scan_from_my_brother_printer_to_my_mac.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_off00010b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B2E 5116 bytes
SHA-256: 1bb47306c22dba522ca7752de960dec46d87c9e7472564e585f03e13aff547aa
font_01_sfnt_off00011ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA3 11136 bytes
SHA-256: 9916ffbce7026ace35e7d270578cf74e191ab3cd581d8940ee1530db9eb17cd7

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