Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ad596880b2e30b…

MALICIOUS

PDF

42.0 KB Created: 2020-08-16 00:40:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3ade867f0dd28094335f5a512a45d96b SHA-1: b0f1d724df16f25463b724c413f28f08deb755b5 SHA-256: 02ad596880b2e30b8cf40491fc70a5ca5626458f312ea76b88474bf64d2e1150
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.com/pify?keyword=detroit+lions+injury+report+tj+hockenson In PDF document text
    • http://files.zionlutherandoylestown.com/uploads/1/3/1/4/131438453/mogige.pdfIn PDF document text
    • http://files.roydonng.net/uploads/1/3/1/4/131483719/22a48.pdfIn PDF document text
    • http://files.basevillageforgifted.com/uploads/1/3/1/0/131070888/aa7ea67.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/1/0431/8160/5018/files/bematech_mp_4200_th_driver_usb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4828/8935/files/28449739911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8206/2753/files/al_quran_juz_23.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/xorifekakomuwisekivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8161/3987/files/towuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5625/9491/files/sajitikujemakofodowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3282/7288/files/38431394512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1567/5809/files/45377139184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/83212984870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3504/1685/files/cumulative_frequency_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0182/1859/files/mubisuxavozafox.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_off0000650c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650C 5052 bytes
SHA-256: b3f52f5c6a2e4460dc1b21d64235390577fc6ce7448ff3a1cd4d72f6d170c3ea
font_01_sfnt_off00007647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7647 10868 bytes
SHA-256: 0dc0a58b0b50a3393dd897121d0691382f09e7ae91724aa7ca1e71354047fba7

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