Malicious PDF — malware analysis report

Static analysis result for SHA-256 dedccdc6ec34370b…

MALICIOUS

PDF

78.7 KB Created: 2021-03-17 01:17:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d65e76f62d1bfa3a380da703cb4c8af6 SHA-1: cbd763901798da943b7bd5cd1e482ff75f22dc99 SHA-256: dedccdc6ec34370bd6580926197b36635f395371db432235e003b8fd7ae2f823
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file exhibits characteristics of a phishing lure, using a movie song download theme to entice users to click on a malicious link. The link redirects to a link farm, likely for SEO manipulation and to host further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, and the PDF structure suggests it may exploit vulnerabilities for client execution.

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/123?utm_term=ankhon+dekhi+movie+songs PDF link annotation
    • https://cdn.sqhk.co/zobelekivix/bkQhfhd/true_football_national_manager_patch_download.pdfIn PDF document text
    • http://idslim-italia.site/whats_the_best_eyelash_extension_kitug4ab.pdfIn PDF document text
    • http://wdd13.ru/muzisanojoxufunaag29.pdfIn PDF document text
    • http://promoocaoameericanas.com/avg_tuneup_mac2e0z4.pdfIn PDF document text
    • https://cdn.sqhk.co/vimitewimuwi/ejdgfif/apush_chapter_4_test.pdfIn PDF document text
    • https://cdn.sqhk.co/basinasedu/MhlgeZD/pentagon_kpop_yanan_2020.pdfIn PDF document text
    • http://reduslimer.website/136760966734519c.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/hiCjegh/bubble_bird_bath.pdfIn PDF document text
    • http://keepmaxi.space/bing._com_app_for_androidugluk.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/kevava/chatal_band_remix_naa_song.pdfIn PDF document text
    • https://6e229dea-1f83-4be8-8cd3-388eabd4f5e3.filesusr.com/ugd/1cfe37_a9bff22d6c5a43a7a704fee6dbfc55c2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/what_is_lettering_in_technical_drawing.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/dissection_of_a_cockroach.pdfIn PDF document text
    • https://4b3b4da4-1145-40fd-8a04-0ac29766dab0.filesusr.com/ugd/6c6203_930098837d394a4da3c0e7db26caa5bc.pdf?index=trueIn PDF document text
    • https://b6086c54-8ef4-40f3-ba18-bbbb993b339e.filesusr.com/ugd/36e927_0a9616282ccf4ac6a68d6c24d860adb9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/begijufadi/katinanunibigi.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/estudios_biblicos_cristianos_evangelicos_pentecostales_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/bufazapititiveg.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/free_diabetic_cookbooks_by_mail_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/80946458061.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_off0000f568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF568 5012 bytes
SHA-256: 18535f778ee7447533aace40851aa365e086c9cd9506c989176074d9d6e05098
font_01_sfnt_off00010661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10661 11488 bytes
SHA-256: 11c3285b1e2fb3f4d95b4d9bc98732860bf6ba1984363ed16625451599109214

Open this report in the interactive analyzer, or submit your own file for analysis.