Malicious PDF — malware analysis report

Static analysis result for SHA-256 602dd8528a32253e…

MALICIOUS

PDF

75.3 KB Created: 2021-02-18 01:19:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 82233bcc15259186b087ac0b541b0a6d SHA-1: e75288d64450912d9e12a1193938a6c80bfc7883 SHA-256: 602dd8528a32253e5305142cddea12ef58f808ebd81ab395021ce6e87c7896ac
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=inconsistent+verb+tense+definition PDF link annotation
    • https://boviseweduxiraz.weebly.com/uploads/1/3/0/7/130776594/zujepil-lugudosewibepow.pdfIn PDF document text
    • https://cdn.sqhk.co/butixasa/gRhhj3f/joramuzewigika.pdfIn PDF document text
    • https://cdn.sqhk.co/nadetajagupe/7ge6hdG/bolafokerozafidewapaso.pdfIn PDF document text
    • https://nipukidifa.weebly.com/uploads/1/3/0/8/130873732/todinazofafufow_zagojiserivegiw.pdfIn PDF document text
    • https://cdn.sqhk.co/lasetipulos/ajegeqr/fortnite_houseparty_correct_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/7ghEji7/cats_crash_arena_turbo_stars_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/jesuzedavoti/hbE9chi/82294581447.pdfIn PDF document text
    • http://basepati.22web.org/terizizeninoponikefuleluz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gevazobi.rf.gd/tadigelutigako.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/buxodi.pdfIn PDF document text
    • http://nawulariwataxut.rf.gd/the_good_witch_s_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/58406575335.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/bosch_divar_ip_5000_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/inventions_esl_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/47115009972.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_off0000ed65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED65 4908 bytes
SHA-256: d4943300b4a36176a3d2c5e7a314898f9e63acfa5a455001c1883b07c8f784b6
font_01_sfnt_off0000fe2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2F 10032 bytes
SHA-256: 67d2e952fd3ea8b19f8beb38580ec60eda3ad1d04d1e594bb05e8d69d90113ce