Malicious PDF — malware analysis report

Static analysis result for SHA-256 33c5360fe5b6d6c1…

MALICIOUS

PDF

80.0 KB Created: 2021-05-18 02:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1e3be8fc0ecd177cde221568db0c247 SHA-1: e781cedc34f7753f2838d9eb85353dbdcf187e01 SHA-256: 33c5360fe5b6d6c1515fcd637b8524283b75ae65569478ea3dca52837bbcdf59
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the overall classification suggest this PDF is designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/strik?utm_term=porque+el+agua+forma+puentes+de+hidrogeno
    • http://talebakela.iblogger.org/vonofibu.pdf
    • http://vixifujugafafin.iblogger.org/graco_milestone_3-in-1_convertible_car_seat_gotham.pdf
    • http://kuxogajow.iblogger.org/esl_english_worksheets_printable.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5ac69bef-a107-4335-9c77-a5fb4a79a5c5/gexefasuvopukemusalisadex.pdf
    • http://lumigetutiburu.epizy.com/classification_of_matter_practice_sheet_one.pdf
    • https://uploads.strikinglycdn.com/files/e98fd41b-ef5a-45ff-88d7-545547081b91/89480460124.pdf
    • https://s3.amazonaws.com/fodose/acrylic_polymers_in_primary_forms_uses.pdf
    • http://xenemusexo.epizy.com/aldehyde_and_ketone_ncert_solution.pdf
    • http://taruligewonuna.rf.gd/8453303980.pdf
    • https://uploads.strikinglycdn.com/files/931a5cfd-c92c-4440-955a-87e1ef2068eb/focusrite_scarlett_solo_2nd_generation_usb_audio_interface_-_red.pdf
    • http://faperolakaf.rf.gd/46248229461.pdf
    • https://uploads.strikinglycdn.com/files/450315cc-eeec-410e-af3a-8e2de8020a1e/the_lemon_orchard_title_analysis.pdf
    • http://pivasif.rf.gd/90440310212.pdf
    • http://kozuribu.rf.gd/49566600790.pdf
    • http://jaxuziwemulogel.rf.gd/kajedajabuti.pdf
    • https://uploads.strikinglycdn.com/files/dc3cb200-821e-49e6-99d5-625fc43cfa32/lilivezujawalubotede.pdf
    • https://uploads.strikinglycdn.com/files/b2e68ecd-3df2-4c93-ab3c-acc1e59c3e03/wuwad.pdf
    • http://ketaxesam.epizy.com/comparative_and_superlative_adjectives_worksheet_with_answers.pdf
    • https://s3.amazonaws.com/zaxefemebidaz/35264691425.pdf
    • https://uploads.strikinglycdn.com/files/2b8f89c4-8f35-40c8-bbeb-98a9cdc6f901/2018_minn_kota_ultrex_reviews.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5e3.bin
7f17266ca565d509b1e983fa4ac7d0c9cc64160bdbe36df9393f84c747f90a37
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E3 5580 bytes
font_01_sfnt_off000108ac.bin
257d09b75213370ea84bf2cfd52ef77d748cee9aa528894e24c22d76303012ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x108AC 12480 bytes