Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc43f7fc2348428e…

MALICIOUS

PDF

80.5 KB Created: 2021-05-24 19:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 019b26cc381edbf2068b9d12907e1954 SHA-1: 82d9e43201fd7a98313804ac21c274661f218b4f SHA-256: bc43f7fc2348428eb0b8d8aad33add8a7a080a7a9025a6c22b11b85c0d1952c8
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 0.9996

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://golowaki.ru/strik?utm_term=se%25C3%25B1ora+fazilet+y+sus+hijas+capitulo+50 PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/suximawo/inventory_report_quickbooks_desktop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed7bd640-016a-47c4-a768-944d95159478/how_to_set_the_time_on_tag_heuer_carrera_calibre_s_laptimer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a00f3cb-1f86-427b-9423-86cecb7d0a48/webudepefivobop.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/lagupanik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e618b3ba-8cf9-494d-8c18-2a0506f1930a/dowizetinemif.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/streamline_english_departures_audio_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/fewekoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61d85b3f-7f13-457a-b169-026d1670a668/65125914511.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ad41529-669f-4ac5-895a-fb5192e30739/ropumujaxologilavi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f6be263-44c6-41df-a7bb-5f6fd50f528b/93137745220.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/surah_al_fajr_ahmad_saud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/650e28ee-7643-4021-8304-26b9fe495ea8/john_deere_gx345_price_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b448c60c-3c77-43b9-805d-700372ca96e7/28249542167.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/kixufidusebenajijazegul.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/lonely_planet_puerto_rico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6929e7bb-a2e0-4bf8-baaa-499e155bfa3c/sabupamobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0379675b-8f14-4560-b74d-c964e3139c03/bupisa.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/22016776659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aacf1a7a-28aa-46a7-9b4e-81390086d78d/oxford_handbook_of_clinical_medicine_7th_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42b81070-6660-4fa1-ae4c-d2eb9f13dc2f/favedolifa.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/bertolt_brecht_80_poemas_y_canciones.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_off0000f70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70E 5912 bytes
SHA-256: abb6360adf37d23c028b73fa08edf747065bbbd20d1b76df3ce32913e161d25e
font_01_sfnt_off00010b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B00 11568 bytes
SHA-256: 850483c78b83784816d8138dd35cbdc7a6318495b10d7a89f57b2a02cb4c70d6

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