Malicious PDF — malware analysis report

Static analysis result for SHA-256 03eccc9baf07a23e…

MALICIOUS

PDF

82.9 KB Created: 2021-06-09 21:24:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: d2dd2882c9b57c32a85d0d8b64efbbc0 SHA-1: 3f0b259cdf919072742059533f2cbba622119ac9 SHA-256: 03eccc9baf07a23ea27c7674200a06ca3d3bcf2290a7fbfe1a2eaafaad329663
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one prominent URL pointing to a site that appears to be a lure for downloading content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the high ML score indicate malicious intent. While no scripts were explicitly extracted, the structure and URL usage are consistent with phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://catamma.ru/pbw?utm_term=bairavaa+tamil+full+movie+hd PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405443/normal_5fd98e558f4f3.pdfIn PDF document text
    • https://mapevitesofik.weebly.com/uploads/1/3/1/6/131606073/f29b539df22c.pdfIn PDF document text
    • https://kalujobad.weebly.com/uploads/1/3/4/3/134390175/loramuliza.pdfIn PDF document text
    • https://tolafapod.weebly.com/uploads/1/3/4/4/134486806/juguxexer_geraxug_besivujexop.pdfIn PDF document text
    • https://gotumofavi.weebly.com/uploads/1/3/4/6/134602885/106168d1d135f54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458124/normal_6000d8f11d07f.pdfIn PDF document text
    • https://telexetobowu.weebly.com/uploads/1/3/4/3/134339901/8450394.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461495/normal_5fccbc7940e5b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xoxafepapesu.pbworks.com/w/file/fetch/144794847/zosarowox.pdfIn PDF document text
    • http://rorazokazog.pbworks.com/w/file/fetch/144731220/quadrilaterals_worksheet_grade_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a005db5d-f620-4507-b346-4deddcdffa11/calories_in_fruits_and_vegetables_chart_printable.pdfIn PDF document text
    • http://xefobukeza.pbworks.com/f/20679258195.pdfIn PDF document text
    • http://wiwedano.pbworks.com/w/file/fetch/144591237/how_to_get_someones_ip_on_xbox_live.pdfIn PDF document text
    • http://wixumip.pbworks.com/f/bahubali_2_full_movie_tamil_hd_download_tamilrockers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d61e541-44cc-43cd-ae3f-2f3d3a560e49/75099240259.pdfIn PDF document text
    • http://gulisapil.pbworks.com/w/file/fetch/144420846/silabepeziramut.pdfIn PDF document text
    • http://rasovuxosew.pbworks.com/w/file/fetch/144912318/forklift_driver_test_questions_answers.pdfIn PDF document text
    • http://pozapagula.pbworks.com/w/file/fetch/144609531/bhagwat_gita_hindi_book.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_off0001091a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091A 5080 bytes
SHA-256: b0b710e9140b71eca0d10472ab0c35b405751742976b01354fb2c05b281fb4f1
font_01_sfnt_off00011a44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A44 10716 bytes
SHA-256: ecdd58aa62315bbefc4807ae68f0cf9801f685dbac78cb1850b652838cc7ee11

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