Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e7ca6e011412ca…

MALICIOUS

PDF

70.7 KB Created: 2021-02-17 23:37:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c19850062ef46b9c2730add2e5be9648 SHA-1: 5993f358825873096a75c2582de67cdd148a596b SHA-256: 52e7ca6e011412ca130c64ae1e1afdc84b3f1db3c3113ef66f6ba92c432e9130
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://jacksth.ru/strik?utm_term=how+to+program+onn+universal+remote+to+element+tv PDF link annotation
    • http://zipufofofize.22web.org/30308041532.pdfIn PDF document text
    • http://how2clever.com/zevogabimam30q6y.pdfIn PDF document text
    • https://molesomux.weebly.com/uploads/1/3/2/6/132681378/7c0f2e4f9.pdfIn PDF document text
    • https://surutadalonuta.weebly.com/uploads/1/3/1/4/131455158/8657078.pdfIn PDF document text
    • https://zexirajeroluwub.weebly.com/uploads/1/3/4/8/134848753/2972133.pdfIn PDF document text
    • http://citimart.online/wyze_camera_setup_button_not_working0uzkf.pdfIn PDF document text
    • http://pefuwujoxuroj.iblogger.org/88923836399.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mawovewukebiz.rf.gd/chakravyuh_2012_full_movie_300mb.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/appvn_2019_portugus.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/fuzeg.pdfIn PDF document text
    • http://rigitusavogu.epizy.com/nadifajisakaborar.pdfIn PDF document text
    • http://seweromovipuse.epizy.com/drastic_ds_emulator_apk_free_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/google_analytics_tutorial_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/your_name_trailer.pdfIn PDF document text
    • http://fefiraxubuviwep.epizy.com/minecraft_dinosaur_mod_1._8_9.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_off0000d9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CA 5252 bytes
SHA-256: 2376b0aedbbb0d5e347843fd355b8dbc0315631f8d05d1f1b6afebaee6498175
font_01_sfnt_off0000eba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA8 9884 bytes
SHA-256: 48e755f65292e55d2950d6ded163ab0ce260051f0a772cdb2685405f1b1855be