Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef298c4f5af6346…

MALICIOUS

PDF

81.2 KB Created: 2021-03-23 10:25:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d2e02e541028b18ce654317b4f30f5d8 SHA-1: e3e1ac58bf0abfbe0ec4ab5fb89440e24f881145 SHA-256: 2ef298c4f5af634605a6cd073fd4194a023be7d79b144d53b9d7393c5e82c300
176 Risk Score

Malware Insights

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

The PDF contains an external URI and an SEO redirector link pointing to 'https://xezojetit.ru/wix?keyword=ans+ul40+specs', indicating a phishing lure for free downloads. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing campaign designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://xezojetit.ru/wix?keyword=ans+ul40+specs PDF link annotation
    • http://idealica-it.website/2013_dodge_charger_rt_gas_mileage8m0nz.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/1iejbqZ/dopiz.pdfIn PDF document text
    • https://cdn.sqhk.co/darojopul/D5KPghl/tibigojovajetinu.pdfIn PDF document text
    • http://idealicaitalia.website/nitujokanozuwixameno5d4v.pdfIn PDF document text
    • https://cdn.sqhk.co/vonofuguniti/ahazjm8/11244368587.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/hd0Bgg4/love_facts_about_zodiac_sign_cancer.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/m1ggp9L/kolo_a_color_maze_puzzle_box.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedevatas/ghYhcwB/91511531175.pdfIn PDF document text
    • https://cdn.sqhk.co/gidurekigov/hhbOtYU/fofaw.pdfIn PDF document text
    • https://cdn.sqhk.co/nadetajagupe/hb3j2hb/39931494953.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pubopelej/virus_vs_bacteria_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/tubiwakumujij.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/athelstane_public_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/ladozaxerijisibukus.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/is_there_an_extension_on_renewing_your_driving_licence.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/leberafogipumoxexu.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/elements_of_music_dynamics_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/answer_to_math_problem_3-_3x6_2.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/debibiwixeromepibogesewi.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/sevuzerub.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/wallpaper_hd_hindu_god.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/aprilaire_programmable_thermostat_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/capex_calculation_balance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/97863584618.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_off000100d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D0 4840 bytes
SHA-256: a9a98d374cf4355e512af5893031f4599704335043e6f4a925e1e663a6611e4c
font_01_sfnt_off00011169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11169 11188 bytes
SHA-256: 389b3548ad0a3d0512f1e78b4a909425b7a9d7481eeaedc139757068e83cb99f