Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e18506a059307dc…

MALICIOUS

PDF

44.3 KB Created: 2020-10-06 16:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: b2cc664f669ea2ff2ae6001fb78f9d79 SHA-1: de20913a35cfb8145cd9a2d436404fe7b4c0a98f SHA-256: 7e18506a059307dc604e4fc89d8e91deb5b721a1e7127788c246fb4f7c22b718
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/pify?keyword=mayan+aztec+empire+timeline In PDF document text
    • https://site-1039740.mozfiles.com/files/1039740/rufalufefimomerudul.pdfIn PDF document text
    • https://site-1037193.mozfiles.com/files/1037193/82513335415.pdfIn PDF document text
    • https://site-1043218.mozfiles.com/files/1043218/32461467400.pdfIn PDF document text
    • http://javuji.nightriserscon.com/uploads/1/3/1/3/131379362/b356b27.pdfIn PDF document text
    • http://files.centralcog.org/uploads/1/3/1/3/131398475/c54c6117fd8.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/1/0499/7778/6530/files/golden_garden_spider_web.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5511/9520/files/gufedesazesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5875/7277/files/14869941143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/exempted_establishments_members_pf_withdrawal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9348/6487/files/99779514199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ccc25af-807f-4ab9-aad2-c9babe90ebd7/buxepodaku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a9ab6e9-4120-44d9-ade3-1d5779884e0f/58106162220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86adfb4a-0600-4468-ab41-a413fbb58584/jiditinilogomuwasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cd881b1-2a07-4f2c-99c0-2bb56dd88570/buzerelukomerujanuga.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDD 5060 bytes
SHA-256: ec25c64036ffad70d3fa3ed799bc681a301a1ff9744981be19bc75501e26ed3d
font_01_sfnt_off00008116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8116 10392 bytes
SHA-256: 9aef8ed998af857fdf78bccee0234283c46d742779cea49a8708be8fd0f20944

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