Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b000d3399dc39a…

MALICIOUS

PDF

74.9 KB Created: 2021-06-11 03:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: e64466bd7ac9129aa744c83e3267a111 SHA-1: ae990ec066ee1339a56dd785909482e185a02861 SHA-256: c7b000d3399dc39a0e5168e63e499dd6af5985b82a3741fe3b29bd15fb24edd5
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by multiple heuristics as malicious, including ClamAV detection for 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, contains text related to 'the parasite movie download', suggesting a lure. The presence of numerous external URIs and link farm indicators points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://infrive.ru/pbw?utm_term=the+parasite+movie+download PDF link annotation
    • https://gawofatofuwe.weebly.com/uploads/1/3/1/3/131380275/dfa5e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483346/normal_5fca83ec1c76f.pdfIn PDF document text
    • https://xikubafol.weebly.com/uploads/1/3/4/6/134607040/e9acf49758.pdfIn PDF document text
    • https://zugasunisozabij.weebly.com/uploads/1/3/4/7/134759734/885812.pdfIn PDF document text
    • https://dolilugufup.weebly.com/uploads/1/3/0/7/130776220/tabedewu-kuvos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462065/normal_600b3945e5589.pdfIn PDF document text
    • https://legonetu.weebly.com/uploads/1/3/4/5/134585206/pumawakuxuwaxa_mazebosofotoku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bilabegape.pbworks.com/f/mole_to_mole_stoichiometry_problems_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b86cfa0c-2640-4264-9229-6dc629058661/nusafaketopofabudo.pdfIn PDF document text
    • http://liwuvedesisu.pbworks.com/w/file/fetch/144592620/16443492707.pdfIn PDF document text
    • http://sujagajo.pbworks.com/f/taking_cara_of_babies_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d149e8b5-96a3-4d41-a782-40f2dddb46ab/97145764621.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c40c154b-63a9-414d-9991-bc9a0e0a4493/fundamentals_of_physics_halliday_9th_edition.pdfIn PDF document text
    • http://pebokuvog.pbworks.com/w/file/fetch/144523995/bissell_cleanview_swivel_pet_bagless_upright_vacuum_2316.pdfIn PDF document text
    • http://nijominem.pbworks.com/f/english_handwriting_practice_sentences.pdfIn PDF document text
    • http://xalomuzavege.pbworks.com/w/file/fetch/144436683/vutesibozarexokewoz.pdfIn PDF document text
    • http://wurogakitibe.pbworks.com/f/is_venom_addon_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/633cea88-ce66-493c-8468-0d2a36894a1b/lelogate.pdfIn PDF document text
    • http://jujupaw.pbworks.com/f/dukasetodoz.pdfIn PDF document text
    • http://gamanovu.pbworks.com/f/14915885899.pdfIn PDF document text
    • http://kutegazez.pbworks.com/w/file/fetch/144732453/sefumede.pdfIn PDF document text
    • http://zudilazo.pbworks.com/w/file/fetch/144509403/guwofitudavik.pdfIn PDF document text
    • http://siseraxoru.pbworks.com/w/file/fetch/144648753/feminismo_para_jovenes_libro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91eaad78-d0f0-4e36-a80d-77e62083a089/tufoxipovutibotipube.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_off0000e8f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F4 5300 bytes
SHA-256: 0f94aeb2792e78eba37d4baf76f17b8963ebdd09b796f570eb81893a853e119b
font_01_sfnt_off0000fadc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADC 10476 bytes
SHA-256: 36c43ddfe266c93e6b88d92eaa8a9d2ee80ac584405b8d01fa185e88cc78894f