Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7af5151371bb9a…

MALICIOUS

PDF

74.5 KB Created: 2021-02-17 22:27:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 27a5851c85f485d174d29ba93b2b7ac3 SHA-1: d999fe454f849e6f590ba1111dbd24cd903ab39c SHA-256: 1d7af5151371bb9a4ec510db9600318053800d39eebd42bdc454409137b6e4b4
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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://crophysi.ru/123?utm_term=what+are+the+deductions+for+2020 In PDF document text
    • https://kegotewu.weebly.com/uploads/1/3/1/4/131437679/xewitem.pdfIn PDF document text
    • http://clebohets.xyz/catapult_king_mod_apk_rexdljdirt.pdfIn PDF document text
    • https://kosilamegorigi.weebly.com/uploads/1/3/1/4/131409210/3387301.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425921/normal_601a80d3696e7.pdfIn PDF document text
    • http://theplafond.xyz/8496268856230ka.pdfIn PDF document text
    • https://zezazuzomej.weebly.com/uploads/1/3/1/0/131070861/repefipuzazilajijin.pdfIn PDF document text
    • https://gepobuxew.weebly.com/uploads/1/3/1/0/131070920/tiguwabumuburo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407810/normal_5fc5bba14afd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428334/normal_5fdbb2ed7a360.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/tuletivotarupu/fovogonak.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/vajagure.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/airlift_performance_compressor_freeze.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/phrases_and_sentences_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/independent_auditor_s_report_2018_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/personal_whatsapp_stickers_app.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/pomanolixiponofugolibuna.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/fiputiluzijetib.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/sukunelilabofu.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_off0000e665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE665 5364 bytes
SHA-256: 28c9e390cea54c8374e6600ce1b238fd5d4f941170dad89965fa2abecd956e49
font_01_sfnt_off0000f8ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AD 10668 bytes
SHA-256: 31cc2bfaf660a7f26ae89a27eaa9988960bab426a0e6c5bdf754da7a4a0f4327

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