Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e4040a6b77a425a…

MALICIOUS

PDF

44.3 KB Created: 2020-10-04 01:57:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 07553e619e5fa73aa2aa4cad937b0ebf SHA-1: 61d28969872041c263364a67ed1d163e1ab4a142 SHA-256: 5e4040a6b77a425ad0b3d65de4e25f9e96bb612f08638dcf51e4a4e7ee16377b
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ggtraff.ru/pify?keyword=run+unblocked+games+76 In PDF document text
    • http://bopaza.gaitedhorsesales.com/uploads/1/3/1/0/131070469/3112771.pdfIn PDF document text
    • http://files.bowentherapywithann.org/uploads/1/3/1/4/131409090/lobezesolime.pdfIn PDF document text
    • http://wibapa.confidentcompanion.com/uploads/1/3/1/3/131379958/wakadewozinoreb_bizupa_tavexeguweranes.pdfIn PDF document text
    • https://site-1036627.mozfiles.com/files/1036627/dalotobinozivogazi.pdfIn PDF document text
    • https://site-1038840.mozfiles.com/files/1038840/33215928833.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/19f7ff4d-97dc-48c4-8038-9c34a3f8de95/faxalatipidusitedubizawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44398e06-9ec1-4708-9a19-81402bf82483/wafonifatakofebowo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d490e92c-3446-406d-ba39-54b6b7144732/botezipuluxedazile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e54d9fd7-f82e-4d48-87a0-380260c133a4/vuverevesejotupop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4683/6123/files/jigumemumegerakujibake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/pasedudun.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B1 5364 bytes
SHA-256: 7ad57544719c43a431486b1d149c782f859f28087dbe5f75d1e6bcbcea54e8bc
font_01_sfnt_off000073db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DB 10112 bytes
SHA-256: b0b260656a1324f4cdbef4f61e4947bdac3c3259e0da838e835266377cc0d3ea
font_02_sfnt_off00009666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9666 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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