Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d5cceefc7f33f9c…

MALICIOUS

PDF

74.1 KB Created: 2021-01-31 08:05:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: d2e903910a8db596b54cffcb29ab98cc SHA-1: 6e8c21f4422a9d5221042a37ad156e9a9013396d SHA-256: 1d5cceefc7f33f9c598223a80c831a34f4fd303fb7ad7683067dcf98666d3a3e
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://yafferge.ru/aws?utm_term=ben+10+omnitrix+unleashed+game+free In PDF document text
    • http://richteam.site/division_with_pictures_worksheetzofcj.pdfIn PDF document text
    • http://lg-copyrightforms.com/nifosarakiwikowitixixo041dl.pdfIn PDF document text
    • http://daliadiago.com/love_letters_for_her_long_distancell4uo.pdfIn PDF document text
    • http://noksipals.online/xasaxipegipizisani57ry.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394082/normal_5fd19086c34b5.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/hhij0hb/warframe_tier_list_2020_brozime.pdfIn PDF document text
    • http://unreguezff.rest/epsxe_for_android_download4aeot.pdfIn PDF document text
    • https://milikosepawina.weebly.com/uploads/1/3/2/6/132696406/b214facba721002.pdfIn PDF document text
    • https://cdn.sqhk.co/wujukipako/jcsgjGr/magic_box_3d_puzzle_app.pdfIn PDF document text
    • http://vknart.xyz/59413169808nz7f.pdfIn PDF document text
    • https://varalege.weebly.com/uploads/1/3/0/7/130738576/5d9122165.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/jaloto/aim_aeronautical_information_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/ct_sang_nh.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/4th_grade_math_quiz_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/gesimoloxabiferafupoveb.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_off0000e322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE322 5632 bytes
SHA-256: 5e6a8475cc9b60791175f1a58d592908da4096b37584c289c834a8c43064c9ff
font_01_sfnt_off0000f628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF628 11268 bytes
SHA-256: 73d369d3ad33a19cabf85a683bab213eadfc3fcb3d118ca8b79a0acb86c33381

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