Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9634f0a9f550e52…

MALICIOUS

PDF

69.9 KB Created: 2021-02-17 06:36:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b32c073f0b717013691bccb930d561ab SHA-1: 498386a4db9afa2579509de2b3bfa3050fa11d6c SHA-256: c9634f0a9f550e52d555e4efd822678efcff97726989a317797cfef192091b6d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://bologen.ru/wix?keyword=motorcycle+labor+time+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413111/normal_5fdc0c3a3fc07.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/dihhfbm/bozukadixen.pdfIn PDF document text
    • http://azakalaza5.xyz/835619758365mynf.pdfIn PDF document text
    • https://cdn.sqhk.co/rutunidosaw/jWB6Bgd/credit_freeze_experian_uk.pdfIn PDF document text
    • http://paksorond.xyz/62422649482voxs2.pdfIn PDF document text
    • https://cdn.sqhk.co/doxelatofon/njgGtgc/talivefako.pdfIn PDF document text
    • http://eslivdrug.space/employment_termination_formvp1mf.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuronufepu/aibroie/fancy_text_generator_for_pubg_name.pdfIn PDF document text
    • https://cdn.sqhk.co/menodotitit/hP6hhJu/xaxijenonenumevifakuwikok.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/b28jdES/absorption_spectra_of_photosynthetic_pigments_lab_report.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/LZFPhcq/transference_game_plot.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/jahaiPF/samsung_level_u_wireless_headphones_gold_eo-_bg920bbegin.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/mojivikapeti/investigacion_cuantitativa_en_psicologia_clark_carter.pdfIn PDF document text
    • http://fujesotes.epizy.com/aaiye_aapka_intezaar_tha_dj_song.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/tuwepenuzoputoga.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_off0000d835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD835 5328 bytes
SHA-256: 5d65850e0eab265d224995b03b1d4dcee5e332c3a22a43d3b96ad858e622a999
font_01_sfnt_off0000ea4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4F 9508 bytes
SHA-256: 993953ef876905314a652b6909216ca020c5d6d4367c0024c0fbf29ddc1a5978