Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b32178defe3190…

MALICIOUS

PDF

43.8 KB Created: 2020-10-05 19:05:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a940735cad4596853d0772822789c6f7 SHA-1: bea28a2dc364b6b2dd0a5c4e15be32c35021418c SHA-256: 42b32178defe31907b2124fa948af93efc3213591aa17ba0f44d5c7e793656ac
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=axe+vs+old+spice In PDF document text
    • https://site-1048452.mozfiles.com/files/1048452/gewidokeveguzoji.pdfIn PDF document text
    • https://site-1039749.mozfiles.com/files/1039749/65960584779.pdfIn PDF document text
    • http://kezenemif.pilgrimcamp.net/uploads/1/3/1/4/131438860/1e3016a60e85cd.pdfIn PDF document text
    • http://files.physeddude.com/uploads/1/3/1/4/131407178/81cd475268d6.pdfIn PDF document text
    • http://fizoxa.theaterdanceworkshop.org/uploads/1/3/1/4/131483830/xowuno_rewuxagiv_futozasup_daxikerarefixiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2630/0059/files/pupirugupafexurikomisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3069/1496/files/13937809205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7697/4747/files/bioprocess_engineering_basic_concepts_3rd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52f18f3f-1f7a-4ef4-985c-7c556ace210f/vapejun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b287fa0-4b9b-45a9-9431-a5c2c408ecc5/risoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/688700f1-e09c-45d6-8eaa-fc4104720841/xozonek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ea628a7-b506-4a41-b6a6-287fdc4ffcf1/pibenulakunofus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/117fb12c-8fa4-4b93-9aaf-dd341dddb100/natotaxut.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 4480 bytes
SHA-256: 5ae813feaedc01df0dc9eabd142dd105eb8bb9910d14828793c58d5066d96336
font_01_sfnt_off0000720d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720D 10016 bytes
SHA-256: 7d8a5bf09be38160a3f8bebbbaab6a0794a25ad25bb967d800d796576f1f9f4b
font_02_sfnt_off00009456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9456 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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