Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e49546312f7c62c…

MALICIOUS

PDF

55.6 KB Created: 2020-10-24 07:08:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 498c5314cc040c525a107a0ec6cda50f SHA-1: b2d17ffd5583cc6a52353c00617c01c1f575f253 SHA-256: 6e49546312f7c62c6cc3fa8bf2c5b617e3880bb299849e18a27baaa8f34ef946
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ggtraff.ru/aws?keyword=wallis+formula+integral+calculus+examples+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f872d43ef121.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f8748e939a25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375206/normal_5f8cf9a4b61ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371505/normal_5f8c620148f68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8b12d9e5704.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374181/normal_5f92350dbbc8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389804/normal_5f8e0d3d6de3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383470/normal_5f8c3a9d2d4c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368958/normal_5f888d3519c45.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/5e848.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/rijusovuwemaz_dezozize.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/lokubolizuter.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/mozerojela.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/penok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/voropa/19393037957.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/fupowafifelope.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/ansys_beam_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/organon_aristoteles_descargar.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/95389164054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9568/5288/files/14739565757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8863/4547/files/life_fitness_elliptical_x3_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0825/0015/files/togusuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9599/3754/files/72908568872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3508/9818/files/65245484903.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC3 5556 bytes
SHA-256: c6916bb5c6f20775f35b40002886584d699c927d9eb5293469a3aef86f2500ca
font_01_sfnt_off00008ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA6 11760 bytes
SHA-256: 8442155394eacb5f44bbae18a204448902a4bb5e4d703c19b78836a8ad0fb167
font_02_sfnt_off0000b744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB744 16552 bytes
SHA-256: 9c2baaba3d03e5c8d756523db785988f28c90596aacfc8416be75bd9afbefdd2