Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ebc572c2cc8cfbf…

MALICIOUS

PDF

34.9 KB Created: 2020-10-08 00:10:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d6ac17145c07a3ffe9c0325d9e0297e4 SHA-1: 292072f946f24859729ff8d418b9c81cf0c83552 SHA-256: 7ebc572c2cc8cfbfe2ce65a1d1fb4896427214cd6c746bfb9e42cc2dff73fdf8
214 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://ttraff.com/pify?keyword=sonoma+cigarettes+customer+service In PDF document text
    • http://files.newflavorhouseinc.com/uploads/1/3/1/3/131398431/gadufonu_ganuxugutal.pdfIn PDF document text
    • http://files.cupcake-couture.net/uploads/1/3/0/7/130739227/4627659.pdfIn PDF document text
    • http://lixirore.ethosbakery.net/uploads/1/3/2/6/132681072/vovofevo.pdfIn PDF document text
    • http://jivato.sarexplorer.com/uploads/1/3/0/7/130775918/939f14ee7.pdfIn PDF document text
    • https://site-1041501.mozfiles.com/files/1041501/vaxitabibozakawagufok.pdfIn PDF document text
    • https://site-1036980.mozfiles.com/files/1036980/gemujudejene.pdfIn PDF document text
    • https://site-1042094.mozfiles.com/files/1042094/rejow.pdfIn PDF document text
    • https://site-1037125.mozfiles.com/files/1037125/94207283923.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/1/0436/1751/7725/files/xiredujoxekabokibudasar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6042/7928/files/democratic_republic_of_congo_flag_coloring_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2668/4320/files/35824073414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/0601/7692/files/tec_9_airsoft_gas.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_off00004aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AAF 5248 bytes
SHA-256: c77b56f4e20a069e29e4e87b60833399a331f0637f98fbfff8b1238d6cf6bd03
font_01_sfnt_off00005c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C73 10136 bytes
SHA-256: fc517c1d6eb5440e9734eff438fafeb22096f7e7f3e2d3f12f067ed71ee21d95

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