Malicious PDF — malware analysis report

Static analysis result for SHA-256 738e2249c10ff951…

MALICIOUS

PDF

40.6 KB Created: 2020-10-05 19:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cf1f780c0ecd6286061fa7212d221dac SHA-1: 25745a7ef5f5d85cd47fbf8c260f6b4b47964b38 SHA-256: 738e2249c10ff95110ad728d3d7ccfe858af84df8362d7985bfa9f7b2accddd5
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/strik?keyword=elite+qubo+fluid In PDF document text
    • http://banaxe.ourredeemergp.org/uploads/1/3/1/8/131856374/d90e9a480a72.pdfIn PDF document text
    • http://files.theopengate.shop/uploads/1/3/1/3/131380728/03cc0c2.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/d932b459-0866-48d8-bf6e-a9de6affb566/81440129980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cf6e061-6ec3-4697-93eb-50247ad12c52/8985456566.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33ef0113-d82d-470f-95bf-8484980cc5c9/dajiwajone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/353619f1-6005-43e0-9310-b2de3bce1738/tojobadobujarepinemapiwim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8ed71a3-4f1f-4c9e-a49c-49b17c87f0f4/83596549113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78b1b48e-5dfb-44ee-94da-64bf5d2a47df/93159187500.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b76b8abe-b499-4d95-82d6-50d55b5f4e47/96501220272.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a1f91a1-1227-4b88-b908-5b60052147da/jididixafadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6136/4904/files/school_retirement_letter_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0819/5736/files/asu_writing_center_jobs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3835/4851/files/best_feats_for_druids_dd_3.5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5470/6069/files/harbor_freight_airless_paint_sprayer_kit_coupon.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_off00006070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6070 4640 bytes
SHA-256: 8b823a96f047dff34e69a288ea136ac096469b8760ac6e3b009c442873442e4e
font_01_sfnt_off0000704e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704E 11616 bytes
SHA-256: 2f3b73e05ca5a2332f8a21170ad9317a6d43d1e5bde9027ba2840f75c0ca2ac1

Open this report in the interactive analyzer, or submit your own file for analysis.