Malicious PDF — malware analysis report

Static analysis result for SHA-256 712b92a724d2bbad…

MALICIOUS

PDF

71.8 KB Created: 2021-02-22 00:17:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d691af1360b876e1b5d765d3852a055a SHA-1: 06e400c6abd75eecc5ecb75579a45ccadf8ac3f7 SHA-256: 712b92a724d2bbadd07658f8cd8d3cd709a65bd14238d50d8dd464fd3c5be755
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=be+electric+pressure+washer+manual PDF link annotation
    • https://cdn.sqhk.co/tejurorado/gyLgdYi/67880084187.pdfIn PDF document text
    • http://idealicacolumbia.site/kiwadifekopomipupalovejr24st.pdfIn PDF document text
    • https://cdn.sqhk.co/sowodopevew/N6IhdyS/best_english_song_ringtone_2019_free_download.pdfIn PDF document text
    • https://golotarati.weebly.com/uploads/1/3/1/8/131856611/rokurigenu.pdfIn PDF document text
    • https://vusukiziroge.weebly.com/uploads/1/3/0/9/130969505/3419455.pdfIn PDF document text
    • http://gradstroy.su/rituvi0d22a.pdfIn PDF document text
    • http://edayafar.xyz/jixojirimakidotategarezosjcoq6.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/7gdWEZt/holy_roman_empire_map_1450.pdfIn PDF document text
    • https://cdn.sqhk.co/rowalulo/hbhjjdY/mikasipif.pdfIn PDF document text
    • https://cdn.sqhk.co/xezafube/dk0ifgi/movie_maker_free_download_for_windows_7.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/luropiw/zelda_ocarina_of_time_emulator_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/26932443634.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/fbi_badge_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/kawakek.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/political_campaign_posters_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/javascript_coercion_performance.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_off0000dc0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0C 5312 bytes
SHA-256: 25509cab665e808fb0daecb3e5e1650ce06dc8203d960f2bef4a1d860f74a9e8
font_01_sfnt_off0000ee05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE05 10704 bytes
SHA-256: e5b16f0ca58a17398de72649e99382a58fbee2bc66d3a1d62295255942dcaf15