Malicious PDF — malware analysis report

Static analysis result for SHA-256 5907ffa7aec3d51b…

MALICIOUS

PDF

47.0 KB Created: 2020-10-26 02:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 030ded10cf06258cac5830ea3f2094ba SHA-1: f80af480f308c976a5c8c749868ca103c9fa9ffe SHA-256: 5907ffa7aec3d51b67cc5e24e1ea13e7b6f432f7a4783890c67c016491444db6
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://gettraff.ru/aws?keyword=physical+therapy+for+carpal+tunnel+syndrome+pdf In PDF document text
    • https://bovitala.weebly.com/uploads/1/3/4/4/134497817/6275397.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/jinitorip-bolag.pdfIn PDF document text
    • https://xezinazilasiza.weebly.com/uploads/1/3/4/3/134319357/72366.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/b4b3eb38b.pdfIn PDF document text
    • https://numomepezudoti.weebly.com/uploads/1/3/4/3/134320197/6797ac9092a9.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/xiduvapoxitu_busevapukerijap.pdfIn PDF document text
    • https://zijavenokin.weebly.com/uploads/1/3/4/3/134315340/femebiwavivodef.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/sulasatevirexo/lineare_gleichungssysteme_additionsverfahren_aufgaben.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/tipping_point_malcolm_gladwell.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/mekor.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/53591746990.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/5922264701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/1798/5958/files/miltons_cauliflower_pizza_costco_cooking_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3838/7607/files/3569802677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6667/1782/files/35458747661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/18304640346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9617/8849/files/dukiserisumamowefuxepuju.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/mathematics_calculator_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/39907736477.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/dijigategorapiwe.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/aws_developer_certification_dumps.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/boiler_feed_water_quality_standards.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/5029283612.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_off00007721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7721 5496 bytes
SHA-256: 6262ee611eb1f6f288ac213c314b1a69e597589823ad7f76a270644a1b526094
font_01_sfnt_off00008999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8999 10632 bytes
SHA-256: 6fa5ed1892408392b9605c7f3bb78ea6e362230efa4a4e53793f193b50e03322