Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2140d871d056575…

MALICIOUS

PDF

58.8 KB Created: 2020-10-28 09:32:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ba167e9f4d3ea046dbab7657eec4b664 SHA-1: 00d95d6974efd1f87e751420f491aaf0df1022f3 SHA-256: e2140d871d056575c17c3ab50a374e5b2dcaa3350b7aef741403feb4bd8bec0d
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.link/123?keyword=my+fair+lady+streaming+uk In PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/fibalosixerivapun.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/9b413129.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/a78475a4aaebd4.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/0836f2c35d91f.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/neletesulekuke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379476/normal_5f8a708f59bb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f88c42c9d5a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370284/normal_5f8bf7c127ed4.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00009683.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00009683.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000d012.bin)
    • https://cdn.shopify.com/s/files/1/0502/9661/9193/files/zutovebekuxojep.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/catecismo_romano_concilio_de_trento_download.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/weekly_agenda_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/milinixebed.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/simple_low_cost_electronics_projects_fred_blechman.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/nvidia_shield_tv_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/87677232626.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bec3dd90-8576-43bb-bfdf-459e2c315787/nursing_care_plan_for_c_section.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28147320-a41b-43fd-a0c4-276ae9028283/60598113477.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 extracted file (font_00_sfnt_off00009683.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9683 5172 bytes
SHA-256: 25971d7df33f64a9a9ba17de518608f8bac62809ee4ab496d0a77a1d75da149d
font_01_sfnt_off0000a806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA806 11948 bytes
SHA-256: 00d867fd4fd03e2a075798c6f7b3c4a699e56f4905c27f7c73590c1675f72e6a
font_02_sfnt_off0000d012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD012 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f