Malicious PDF — malware analysis report

Static analysis result for SHA-256 da289d3f88c0cc9c…

MALICIOUS

PDF

68.9 KB Created: 2021-01-27 20:27:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b7c7271ad3b2b13a9f3c596156e1a725 SHA-1: 9297e7998cfd003c1bf86eac6a6fe556b119e0b4 SHA-256: da289d3f88c0cc9c14aa3fe916a3353f34705611e8e1c3317f3b69976ced1c3f
262 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://gettraff.ru/wb?keyword=freaky%20love%20stickers%20for%20snapchat In PDF document text
    • http://bioforcecolumbia.site/coin_counter_locations_walmartcdnab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_600ee4eb5b352.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496818/normal_60072828f27f3.pdfIn PDF document text
    • https://ralirepiputup.weebly.com/uploads/1/3/4/8/134852471/6390977.pdfIn PDF document text
    • http://item-get.top/war_of_the_worlds_movie_1953_traileralfay.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475559/normal_5fe1ae7c4250d.pdfIn PDF document text
    • https://mipapipav.weebly.com/uploads/1/3/4/0/134012398/de9a7d921f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402710/normal_5fee3a00339ea.pdfIn PDF document text
    • https://mosezogojufotu.weebly.com/uploads/1/3/0/8/130813841/duritug_gekalodoj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490365/normal_5ff153b1af221.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384323/normal_600f7aff07102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462035/normal_600b78ac2dffd.pdfIn PDF document text
    • http://eurostore.info/57218985694tpjij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420431/normal_5fe4104c7f904.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369310/normal_5ff7befddd9b5.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/rerinago/admissibility_of_computer_generated_evidence.pdfIn PDF document text
    • http://panadokopejed.epizy.com/clear_dns_cache_firefox_android.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/56286914109.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_off0000d273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD273 5284 bytes
SHA-256: 154deed5b60eacd15bc29b032a92cf8c592038b2231964213544547292da128a
font_01_sfnt_off0000e47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47E 9984 bytes
SHA-256: 2acd04aaf5127d4533547801df7da9599050b3683dc30ca66032595017aee921