Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03b15f3cd656a95…

MALICIOUS

PDF

46.8 KB Created: 2020-10-07 07:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8ee5246ca223a95597105a5ee09ed927 SHA-1: b64afe98027291d467585eab03f495f3195a7a85 SHA-256: e03b15f3cd656a9556657f100dfb06a3c463ee01a8f0484bdf568369ed25c886
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=outlander+sport+repair+manual In PDF document text
    • http://bumuto.enotecaathena.com/uploads/1/3/1/3/131381130/xefop.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/d29ba042-8dc2-43f7-acc0-d6c8ffc26998/veninuzurumimujagur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef34f831-4cb7-40ea-a3eb-78a94aed1744/kezuvezefexag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a60abb8-0a04-4d77-ac62-bba88088eb07/suzexesebopegamubinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f4edebc-7729-4627-a26d-ef570c452380/wizovirub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cc13e88-ded5-45f3-9792-5d9033d13350/64008422007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b4d603f-0095-4e99-ac19-4bef1b40328f/85453099334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1b01cc3-0f5e-4286-8121-d24553998802/jawojubisisigenapos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b7d118e-fc8a-46c4-b7fb-b9a204fe321a/83554229542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8197/4169/files/hotmail_msn_news.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8119/8496/files/vonale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4812/4575/files/red_rising_pierce_brown.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5274/6920/files/spider_man_far_from_home_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/9620/4442/files/gejatomanalegaxoto.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_off000075e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E2 5132 bytes
SHA-256: a09c6151424720a9c4662827f3de51c83815c9eff6758ee4a56d57ce19d3cd9c
font_01_sfnt_off0000873b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873B 11700 bytes
SHA-256: 010cf94e3b05cd6423567f2e48b2a7693042c96372c96205f40f67b7837ec988

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