Malicious PDF — malware analysis report

Static analysis result for SHA-256 eab50e57c397f565…

MALICIOUS

PDF

46.4 KB Created: 2020-10-15 03:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e21ba1e6822d875e746518f9c67c8acb SHA-1: 802fe6598698f02b529c9f80b93ff2a2bccccc26 SHA-256: eab50e57c397f56584daa22b102e531a804d4ded62b69c3f4f60014be9da30f4
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/123?keyword=los+angeles+abrasion+test+astm+pdf In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/98a531d6b1c.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/987b21c6b.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/vasutanajive.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/6792893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f8734eecb555.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368230/normal_5f87806452ae2.pdfIn PDF document text
    • https://site-1043934.mozfiles.com/files/1043934/wovatoves.pdfIn PDF document text
    • https://site-1045415.mozfiles.com/files/1045415/letixenularozoxexosogef.pdfIn PDF document text
    • https://site-1041859.mozfiles.com/files/1041859/46306749375.pdfIn PDF document text
    • https://site-1039481.mozfiles.com/files/1039481/fagozerudaruzemek.pdfIn PDF document text
    • https://site-1043923.mozfiles.com/files/1043923/67264397036.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/1/0479/5849/1303/files/xamusubizusokolixabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5795/0119/files/why_is_internal_fertilization_necessary_in_reptiles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5838/0450/files/tuzekakefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8320/2711/files/82934739620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7221/2132/files/30406827575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3553/1685/files/lucky_you_perfume_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3905/0906/files/whale_evolution_kiosk_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8426/6137/files/lequel_auquel_duquel_francais_facile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1255/3374/files/rainbow_loom_starburst_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1748/6503/files/desert_rose_franciscan_dinnerware_price_guide.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_off0000765a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765A 5444 bytes
SHA-256: c6f06445d71d0475ed047008b96dee632f9d7f378753ec861c4eac27a23b9ef3
font_01_sfnt_off000088c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88C1 10352 bytes
SHA-256: a60dc3f0becd53959f44557c352b913cefd0388b36db365a5d5236e9aa4d758c