Malicious PDF — malware analysis report

Static analysis result for SHA-256 4718cc10e393c69f…

MALICIOUS

PDF

38.4 KB Created: 2020-10-07 19:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a0ab1bdb5e7c8ed865b8538a670d1931 SHA-1: 66de58bcddcb59b5bdacf6f33e261b4372507b09 SHA-256: 4718cc10e393c69fbbca2c4c71384880a41ff7d7faa05b84a338a8407375ce00
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/pify?keyword=economic+definitions+worksheet+eco+365 In PDF document text
    • http://kitovori.versojewelry.com/uploads/1/3/0/9/130969352/27804c382db521.pdfIn PDF document text
    • http://biwexije.rubiesgirlsclubs.com/uploads/1/3/1/4/131437736/zazimoligewuz.pdfIn PDF document text
    • http://files.transformationsbyerin.com/uploads/1/3/0/8/130874314/meguli_vabenifarelu.pdfIn PDF document text
    • http://files.stviatorparish.org/uploads/1/3/1/4/131437233/zolipiluwevuxamamer.pdfIn PDF document text
    • http://kusemep.gatheringofthetimes.com/uploads/1/3/1/4/131482995/8189178.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ee92eea-7a0b-40d0-92f3-932bf3bad06e/bivaxadeguxatomijigese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad5c9e2-7278-4946-8185-e9ebf490cd99/93057963865.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84c1ec35-9a67-4b4a-873b-9cc9a7aafe96/75215125114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12278f0a-92d6-4727-8365-528d6b859a81/rizonaxinerize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/debufusoturuloterolike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8327/0818/files/delete_badoo_account_on_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/6753/2198/files/measuring_graduated_cylinder_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7868/8674/files/diffusion_and_osmosis_ap_biology_lab_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3940/7784/files/58711166624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1560/9761/files/morphe_brand_pronunciation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/9101/9926/files/what_does_the_number_28_in_the_bible_mean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3296/5031/files/miracle_blade_3_block.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2924/9179/files/pigowobuti.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_off0000567d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567D 5576 bytes
SHA-256: 933d25dd2740e8667724df64e9cfd802df1e47a8b5fc21c3d97f8eb07d009958
font_01_sfnt_off0000696c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696C 10208 bytes
SHA-256: ddeac295714438ecf1c66c7748aaf9ac33ef0b186157d9a17cafcf5661d91317

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