Malicious PDF — malware analysis report

Static analysis result for SHA-256 595504a78e3d7663…

MALICIOUS

PDF

69.3 KB Created: 2020-10-23 06:30:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 057575cd089c6c7870b884200fdc1cf1 SHA-1: 6779ee43711e9ca7fce23a7798cd39a70b7bf0cc SHA-256: 595504a78e3d7663dcd914d1e75f1882ed445d152dbef9f8b42d1d5df5f887bb
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://cctraff.ru/aws?keyword=la+fitness+cancellation+form+pdf+2016 In PDF document text
    • https://vapaniwagivu.weebly.com/uploads/1/3/4/4/134442769/vubofenupijiki_loliwasoloz_jefifot.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/7a6ca6fee8e953.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/mevaxapun-pinugese.pdfIn PDF document text
    • https://nalabusapigo.weebly.com/uploads/1/3/2/7/132740218/680d6de07c8fd.pdfIn PDF document text
    • https://majijajivetik.weebly.com/uploads/1/3/4/2/134265766/2596490.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/1/0502/9462/0333/files/tragedy_of_the_commons_article.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/20820065690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/81243429920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7915/8945/files/sesexazuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/newige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0636/1239/files/72871212016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2763/0744/files/fromkin_introduction_to_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/human_development_research_paper_topics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6251/7909/files/tipos_de_deportes_y_su_definicin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4654/2229/files/the_civilization_of_ancient_egypt.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/47459928004.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/pisciculture_hors_sol_au_cameroun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/jelujixixefevupabikaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4650/0030/files/4377246405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1791/6575/files/govefaxejosizibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/62442860946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3123/5224/files/rexunamonulajoke.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/gawobowatugogetodom.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/betesevedezutogepesa.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/sukaduvomi.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_off0000ce6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6C 5720 bytes
SHA-256: df5a5223ccac10fa6e28a323790074b50ad27e30477bb9731c551bd61e9b2dbd
font_01_sfnt_off0000e1d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D2 11052 bytes
SHA-256: 9d244f87aa08030b61898232de644a2665acb9bf5637d83a24a7454f1e1f2106