Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a160e9e034e7063…

MALICIOUS

PDF

69.1 KB Created: 2021-02-19 10:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 87c899a176cadaa45415cf9973c34582 SHA-1: a72c5c0b9eba98c4c7c6d0f98e50c2555f669c59 SHA-256: 2a160e9e034e7063c1e6e317c4c975e98e2cfa636e67c57ce8d1736bc219885c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=pressure+problems+worksheet+answer+key In PDF document text
    • https://cdn.sqhk.co/ributexovek/bPgckay/57261033776.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/WGgiihq/best_buy_brooklyn_ohio.pdfIn PDF document text
    • http://wordsideget.top/fulgor_milano_range_manualilrg9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5fd9760247834.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386591/normal_5fc66e5e4335c.pdfIn PDF document text
    • http://topcabinets.xyz/arteriovenous_malformation_embolizationqqinx.pdfIn PDF document text
    • https://cdn.sqhk.co/juxajomuz/jMgi19v/dancing_ballet_in_dream.pdfIn PDF document text
    • http://euroshopmn.space/juwomiwexinemvh0y3.pdfIn PDF document text
    • http://heliusdesign.ru/62127828cojir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403557/normal_602e0e4469db2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412582/normal_6013714527902.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465398/normal_5ff0f459d28a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386822/normal_5fffbe31e671b.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/hdlt1ie/mozuvofafumex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393632/normal_6006d49ed591f.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/purixifusipelid/felenef.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/10720194733.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/kannada_love_feeling_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/litizojatudu.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/hornbill_class_11_1st_chapter_question_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/world_geography_map_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/logitech_surround_sound_speakers_z506_subwoofer_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/13502078348.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_off0000d227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD227 5456 bytes
SHA-256: f5fa1a1a17b9493a1c34f036e0aeb3eb2444cd542e4838c8a36c83e23a56eb98
font_01_sfnt_off0000e499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE499 10100 bytes
SHA-256: 9fd4409fec64d279f4072eca1d0d764538f0d8fa20c485e11c15ef4129102930