Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c60dc8147467dd3…

MALICIOUS

PDF

65.5 KB Created: 2020-10-12 23:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3090c3a7bb7866a0105fbbaf5b8880bd SHA-1: fcade359b1625a7ad0c426e1c7eed14f65903a06 SHA-256: 5c60dc8147467dd307747b28d1ef6313ce40268336351f9dd772462e9df09160
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/strik?keyword=behringer+ep4000+manual+pdf In PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/64603488412.pdfIn PDF document text
    • https://site-1039814.mozfiles.com/files/1039814/lovebosimaviwavarujomoda.pdfIn PDF document text
    • https://site-1042191.mozfiles.com/files/1042191/86842303596.pdfIn PDF document text
    • https://site-1037894.mozfiles.com/files/1037894/bipukasul.pdfIn PDF document text
    • http://files.huemine.com/uploads/1/3/1/4/131452827/8489143.pdfIn PDF document text
    • http://files.stayblooming.com/uploads/1/3/1/6/131637131/dilapirawaliwuvif.pdfIn PDF document text
    • http://files.ohiodesign.com/uploads/1/3/1/8/131856190/jiwejodu_kadopa_jaripejup.pdfIn PDF document text
    • http://wodinude.plymouthnoonkiwanis.com/uploads/1/3/1/6/131606218/ca1f5f48572a.pdfIn PDF document text
    • https://site-1036907.mozfiles.com/files/1036907/nasijuxuwidinexisiki.pdfIn PDF document text
    • https://site-1036975.mozfiles.com/files/1036975/boviveganiwus.pdfIn PDF document text
    • https://site-1044029.mozfiles.com/files/1044029/29153694535.pdfIn PDF document text
    • https://site-1037163.mozfiles.com/files/1037163/boxekijelegolukebikaradon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/9456/8863/files/dd_charlatan_bard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/7230/7367/files/city_of_jackson_tn_fire_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2812/3295/files/fertility_cleanse_kit_in_india.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3568/3747/files/90309491778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8155/4325/files/83847184713.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_off0000c113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC113 5556 bytes
SHA-256: a99d44de358a1d84d1b22f03ffce2ac1f5fc828501ed7675bb69c2735759a28d
font_01_sfnt_off0000d3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D3 10992 bytes
SHA-256: e0f42216a016fda8b953257d393333bc67e27954309fc6964a704847994d421a