Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e1ccb097820d818…

MALICIOUS

PDF

78.2 KB Created: 2020-12-28 07:50:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 471c4c5e33cb54a866226123b80be412 SHA-1: dbef044db930ff30d100e5983339e39d34e7e343 SHA-256: 6e1ccb097820d818342c1aca290593d9b0a6636488ea99add075009814483bae
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised with a seemingly legitimate school name, which is a common tactic for phishing lures. The link points to a known malicious redirector infrastructure, indicating an attempt to lead the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and the malicious link strongly suggest an intent to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://traffine.ru/123?utm_term=george+washington+middle+school+ridgewood+nj In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f88634fd3aa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385214/normal_5f930a08ceb2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385216/normal_5fe42fdf83da1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376611/normal_5fdc48bce24f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414174/normal_5fbd8c436b122.pdfIn PDF document text
    • https://cdn.sqhk.co/jilelemo/gd9khg1/farm_animal_coloring_pages_for_preschoolers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478664/normal_5fd331c193186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416322/normal_5f9aacb152b7b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a95ff0b7-df63-496c-a13c-40cd9e0c6d96/mukka_express_cappuccino_maker.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/fzmovies._net_app.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/thrive_landing_page_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84edc49d-91dc-4637-a0f7-72345b66b716/2897246959.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a5edc5d-75e8-4779-9499-720854d9654c/antigone_scene_2_analysis.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24E 5552 bytes
SHA-256: 3c80b2272a289de6c9241f9947f1480d7ddc154a0189816a56cbcd40053deece
font_01_sfnt_off00010518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10518 11336 bytes
SHA-256: 29f80142d9c91dbfc2a858572964d28042babba8f879861a6d53d42594dc9998

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