Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e6009d3c0a2bb58…

MALICIOUS

PDF

49.5 KB Created: 2020-10-01 06:42:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b243e83bae3c45f480ff3d89f2697a36 SHA-1: 56a93329d9cc4faa09ed78e30643990fc43f4da2 SHA-256: 5e6009d3c0a2bb581bbe1e8b326b6c34eda5cd214e1cca5dba217fb81da28b05
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/strik?keyword=punctuation+rules+and+practice+pdf In PDF document text
    • http://nafonor.olyhp.com/uploads/1/3/1/4/131452836/fejilulavutadiripomu.pdfIn PDF document text
    • http://files.atomicthreadsclothingboutique.com/uploads/1/3/0/7/130739916/wajebiwumokowaxu.pdfIn PDF document text
    • http://pajamele.christophercreviston.com/uploads/1/3/1/6/131606349/kemusudofivugo_jotis_jometi_mafof.pdfIn PDF document text
    • http://munaf.grapeofthevinegoatmilksoap.com/uploads/1/3/1/1/131164250/guposejusiledunejusi.pdfIn PDF document text
    • http://nuxisokim.simplifiedcomm.com/uploads/1/3/1/4/131437850/56c10b9f3.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/1/0432/6404/9318/files/nepaxoromukejuwipaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4139/0492/files/lopoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0524/files/wapepewejilupowamidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7922/0891/files/xafipexujapidinemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/23002019373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/20419913009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5999/2990/files/85578688810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/free_toshiba_driver_update_utility.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/muwavubabepizojenada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fecbf8e2-039b-4247-81ba-b7e47ed0af26/nujevozofixefur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/474b9099-b07f-4090-a21b-ecb17b2f3a1c/45876597266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a9ff248-35a3-4fe1-8963-a57b7a71fa3e/83969834329.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 3

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_off0000837a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837A 5152 bytes
SHA-256: a0b10d453500206ed969ef35819ad9dadc4092fd7d4c934ce600595cdd8581e1
font_01_sfnt_off0000950f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x950F 10940 bytes
SHA-256: 298d3cfe3ded9ae278c2d165bc641bb7c9de1b0dc94973e42c3f2d2746085c3f

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