Malicious PDF — malware analysis report

Static analysis result for SHA-256 2020c39545d8e465…

MALICIOUS

PDF

37.8 KB Created: 2020-11-03 10:29:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a7be5bf4437716c9c701007c8b05a5d8 SHA-1: 1e928616c4ed2a3e7ff1406015c01289e881a2b4 SHA-256: 2020c39545d8e46571cdffe13998d2f0e1f704d55aa74b4cfba4378dab04ce0e
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://ttraff.club/pify?keyword=idaho+pesticide+applicator+training+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375690/normal_5f9cd57e6bc9b.pdfIn PDF document text
    • https://kilutiwoxit.weebly.com/uploads/1/3/1/6/131636983/tolanoku.pdfIn PDF document text
    • https://dulopatejobe.weebly.com/uploads/1/3/4/3/134317335/7329014.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/1/0506/6502/9819/files/pawn_shop_prices_for_xbox_360.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/26459257013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7081/5897/files/40277072437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/95687363063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0046/1998/files/bunepemex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a305cf2-7d00-4f02-b68b-62c550b500fc/disekimijuzelibiwomufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4263/0563/files/tumor_jinak_payudara.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/couple_or_trouble_asianwiki.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/funawirexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6687/8869/files/42840984856.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_off000054fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54FC 5424 bytes
SHA-256: 4e019d5d4f2f84e06e60a6bbdd4fcb491e373bed3a9bed40aa98f710311854e4
font_01_sfnt_off00006741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6741 10272 bytes
SHA-256: f81343d5c64f035c9a948d5451f98060ff0f9c1ed485509d37c450aa9e16d5e1