Malicious PDF — malware analysis report

Static analysis result for SHA-256 9617f125391c12d3…

MALICIOUS

PDF

63.2 KB Created: 2020-11-09 22:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: aa6525af176cd002e1042d9596f5d513 SHA-1: dc8799ce22a4bd12eeff7d7018fa7b0a0d2fffff SHA-256: 9617f125391c12d311b3d0cd225e0a3fd2613a00709d4cc58c6f842e10f13830
254 Risk Score

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
  • 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://traffking.ru/aws?keyword=schwinn+varsity+1250+the+price In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5f945f57744cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_5f8a3e67b9b73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401558/normal_5f942f1eb54fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415081/normal_5f9ccc3687a99.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/7800213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426810/normal_5fa8d3b732dc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408170/normal_5f9e8a7eb528a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367961/normal_5f8a509f0fde2.pdfIn PDF document text
    • https://mujolopiwajini.weebly.com/uploads/1/3/4/3/134379833/mowenabesis.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/a9dd99b2-7ad9-4898-8df1-b3479ea5bec5/62119664258.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f1d40b6-bfc1-4e60-870b-b970de5db2e9/fosojopib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/843f3139-fdc5-48e3-8243-5f0715f79ff9/buxupotavulawovis.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_off0000b784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB784 5796 bytes
SHA-256: c9274e724954fd3957accf472b3d65956e111a960af039445ae713c0b9ca8d3a
font_01_sfnt_off0000cb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB5D 10616 bytes
SHA-256: c73b067cbd89360190058ee24c37c0b6e3b14e65d1c4e5018c48a2c26413b6dc

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