Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3e822d56c2b2a2a…

MALICIOUS

PDF

44.8 KB Created: 2020-10-03 06:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bc5b10c1a480274248279eea41e06d72 SHA-1: 7f08ae6371983f3d193c8262f56b3086a8578771 SHA-256: a3e822d56c2b2a2ae167753408964328144af2bb5163c794744c39646520eb7c
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=tommy+timmy+smoother+skin+reviews In PDF document text
    • http://pawuwez.cantonohiolandscaping.com/uploads/1/3/0/7/130776321/3998718.pdfIn PDF document text
    • http://muvalem.americanindianjewelry.com/uploads/1/3/0/9/130969525/fawiraroki.pdfIn PDF document text
    • http://labebonar.called2lead.com/uploads/1/3/1/6/131606069/2ca1c9.pdfIn PDF document text
    • http://files.powersbaptistchurch.org/uploads/1/3/1/4/131438111/maponusurisadoxa.pdfIn PDF document text
    • http://files.littletoncrabappletrail.org/uploads/1/3/1/8/131856330/17938.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/1/0435/6964/3675/files/wet_and_wild_hawaii_coupons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0236/4579/files/53099849874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7662/6848/files/lukit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/8502/3382/files/dayton_welder_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5372/5334/files/mercury_402_outboard_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/5567/9132/files/89087497820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1749d313-f761-4aed-98ea-0e579e16bea5/83380875073.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8db7acd-93ed-47f3-96bb-061a7cc0bf28/38635811081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e849216-f7ac-4640-bddc-7da41c06094c/runarepujenogazesedin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/313c616f-eea0-41fc-a8b9-1be9ea2df79e/99503191723.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb705183-26ae-4706-85ea-67ed56336f5b/tagelorun.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_off0000718a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718A 4952 bytes
SHA-256: eb0394571574a914dd6aeeffe2a90fefb7ea4046c9120c9796efa80859e0eac6
font_01_sfnt_off00008253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8253 10532 bytes
SHA-256: 96a8e38dc49f7f5bd96b51826ce9f16fdf40cdc8c1daf049866d16bf7811b7c3

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