Malicious PDF — malware analysis report

Static analysis result for SHA-256 1565f8d1037fee8a…

MALICIOUS

PDF

50.2 KB Created: 2020-10-05 04:34:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 47d6b5a0422a8e42608b60b971728097 SHA-1: b6a09ca7c5e41ecfff4358ca6024e6fc0d71b7b0 SHA-256: 1565f8d1037fee8a9237e8f2d8078bd55b58fd9e5121e98daed57f053087fd44
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://ggtraff.ru/strik?keyword=aakash+aiats+question+paper+2019+pdf In PDF document text
    • http://files.simplybe.ca/uploads/1/3/1/3/131383760/8994784.pdfIn PDF document text
    • http://files.en.imural.ca/uploads/1/3/1/6/131606475/zuwokirugije_resoz.pdfIn PDF document text
    • http://pinusodi.habbosia.info/uploads/1/3/0/9/130969963/8100909.pdfIn PDF document text
    • http://files.hollytannercountyclerk.com/uploads/1/3/1/0/131070291/zozigi-xamawojujir-bavuvadinij.pdfIn PDF document text
    • http://files.davesartdimensions.com/uploads/1/3/1/6/131606348/vojetiborakupo.pdfIn PDF document text
    • http://nupobixu.stoneydegeyter.com/uploads/1/3/0/9/130969723/zegepitufato.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/1/0434/6370/4729/files/13786085710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8738/3716/files/cuyahoga_heights_high_school_yearbooks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/glorious_chords_bj_putnam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3903/0439/files/47652392790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8915/files/math_extended_essay_samples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b75fd809-3ff4-45fd-929c-9ac3f5f89833/lenixutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac559ef6-aad0-40c9-9040-ec252c45a4f8/kelaxuno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2081feb-763c-47e1-bdc1-70282fe74344/tapomapebob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b0380a6-2ee5-4f5e-81d1-929ea8e9ec80/vofenamoriwet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e715695-b1ef-4203-886a-f6c1dc1a4e4d/54146382745.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_off00008445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8445 5756 bytes
SHA-256: 9acda41966b3409ca38b2d280b06fb65964ec8ad75165be69374c7e53dad5a1a
font_01_sfnt_off000097e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97E0 10524 bytes
SHA-256: a3f5b787bf1aab3595174a16dbf9e458f13fcba31c4770c10ee26343523eb2a7

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