Malicious PDF — malware analysis report

Static analysis result for SHA-256 79376627fc4fa1b5…

MALICIOUS

PDF

76.7 KB Created: 2021-04-08 04:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7b35927e91a36f43e09c6a5471e95644 SHA-1: 939ca50a8b8ec87817723d47ded0264bac7dc3f9 SHA-256: 79376627fc4fa1b57a1f023235c5f22fbf7f7b192ee3bb0bd71b60bad083829a
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://druttle.ru/123?utm_term=logo+quiz+level+2+answers+with+pictures PDF link annotation
    • http://napabedavidok.iblogger.org/navigators_topical_memory_system.pdfIn PDF document text
    • http://lozhobelir.space/45589955342zubqc.pdfIn PDF document text
    • http://specrazreshenie.com/administrao_financeira_e_oramentria_ii6w5c0.pdfIn PDF document text
    • http://qwonder.space/dofazegamutolowovuzavi7yl54.pdfIn PDF document text
    • http://dodemawaj.iblogger.org/58430847899.pdfIn PDF document text
    • http://molosorew.iblogger.org/25067873870.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://s3.amazonaws.com/lowuwofuxali/zepamerifigorez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d33ae3cd-066c-4048-b5c4-71742556388c/ferefos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9d1aaaf-df67-4df1-9da1-9f75cae060e1/how_to_be_a_lash_technician_in_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/cadillac_ats_v6_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/beviduv.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/gotozifarefawujiwopoz.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/34100543209.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b188260b-7066-41cb-8f70-7b3781ad4b40/warcraft_3_reign_of_chaos_cd_key_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/mowolanew.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/64827591811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f090d17f-34b4-4e90-aac0-043fa28bc038/what_are_the_two_classical_conditioning_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec56835c-447d-4e65-81dd-f0f802ca326a/37894649017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e6cced-ceeb-47ca-9097-026af67bf587/the_boy_in_the_striped_pyjamas_gretel_character_profile.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/reason_for_leaving_company_answer.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_off0000e0af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AF 5480 bytes
SHA-256: 2b04bf680d496ab325da108a914ad77afb0f2badb69bf7d9a4fa3965b6b12502
font_01_sfnt_off0000f36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36B 10932 bytes
SHA-256: f1807248868e84dc5ff326aa9656d5e59c389418aa63b24dc1b3879dd397abb8
font_02_sfnt_off00011747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11747 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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