Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8c0b8780f3f580…

MALICIOUS

PDF

45.5 KB Created: 2020-10-19 17:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: aeab6e72e87890715a8189f8e75ed4e8 SHA-1: 744813a17755d83bea16827457d011c5c410ff35 SHA-256: 7f8c0b8780f3f5808650758a94eec3b267bb6e8ffd8fb7d9d4839d7113b1ad10
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.me/123?keyword=oracle+java+swing+tutorial+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373504/normal_5f89f04eddde5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8746bf15741.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_5f8c7dcdbe22a.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/pagetapulurozu.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/add8f8094b.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/regamafizesoxidiwed.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/saxuvenimugugadeso.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/7982972.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369499/normal_5f8c9c87b20c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375207/normal_5f8d094768bdd.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/1/0461/3698/3720/files/44241013860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4188/2780/files/amps_for_black_and_decker_iron_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1152/2727/files/khutbah_jumat_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/34595424256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8232/7230/files/manifiesto_del_partido_comunista_ensayo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2892/9945/files/37854610592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/1573/0886/files/legion_blacksmithing_guide_1-100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7481/7693/files/lanatexiwij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6150/8256/files/zujubasavazoraxisoxalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4060/2269/files/82264259570.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_off000069cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69CB 5580 bytes
SHA-256: c951fbb25f036919dc28743ab8fc3cd9fddf10a572f93efc3a558746a83d4b71
font_01_sfnt_off00007ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEB 14176 bytes
SHA-256: bffc0fc391b5a3effddac98416da04ed71945919a2d8dd5ac5ce851434630d40

Open this report in the interactive analyzer, or submit your own file for analysis.