Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb39fa4c42a9967…

MALICIOUS

PDF

49.5 KB Created: 2020-10-27 00:16:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 2ca7c3f2a62118a93b049ec6ba692fec SHA-1: 35e3d5fb969e7a5ebab6baa555f86e151e68fb0a SHA-256: 0eb39fa4c42a9967abd45fcf24f4eef89c4fd9580fe4161ca25f745a84d3727f
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://ttraff.link/123?keyword=walk+awhile+in+my+shoes+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373526/normal_5f918993477bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368229/normal_5f888b3b0118d.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/bomagev_zavonabewud_fenorewusar_kezofenetig.pdfIn PDF document text
    • https://kesolijizik.weebly.com/uploads/1/3/4/2/134265964/d95139b.pdfIn PDF document text
    • https://denasigetul.weebly.com/uploads/1/3/4/3/134332190/vutetenibavo_suworeli.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000075ce.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000075ce.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000aab0.bin)
    • https://cdn.shopify.com/s/files/1/0503/3879/1582/files/wogovojemamagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9331/0631/files/honda_ecm_2800_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6875/4594/files/kolokepowixagizuzoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8763/2813/files/iron_man_tab_bass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0667/3575/files/website_project_management_plan_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5289/8739/files/67646247345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/krylon_crystal_clear_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4492/9690/files/5845582679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0842/5639/files/zoteset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1049/0022/files/26341683781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3021/5317/files/58914702611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/44406464629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5386/1032/files/212956640.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 extracted file (font_00_sfnt_off000075ce.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75CE 5164 bytes
SHA-256: f3eed1f507415b415fc2ad94c8afe8d3fcd67c8cc9e154eba4299428d2319e5e
font_01_sfnt_off00008748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8748 10292 bytes
SHA-256: 97a589a5a2ef42a4baa6d93ae77bfdb07e52e9cde3ea097b236a9df815ea106c
font_02_sfnt_off0000aab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB0 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361