Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc7fce2f5e529d27…

MALICIOUS

PDF

36.3 KB Created: 2020-10-28 11:24:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 4f701f1f4f698f9545a4c892fb21bb4e SHA-1: f72e1d874e5703c4d14bca012b8b710803733506 SHA-256: cc7fce2f5e529d27a4f4cbc642e7b0a39608c848028c3d49a72de78e339cbad3
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.com/123?keyword=checkmate+pizza+concord+nh+menu In PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/3590787.pdfIn PDF document text
    • https://kupujusurigov.weebly.com/uploads/1/3/4/4/134471221/sokex-bifidapetogu-toxofiwosu-tomasuz.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/pojabepos.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/moxajoro.pdfIn PDF document text
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/887661.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/tizobajevi-dopebulixoni-javomumarilit-roruripofexede.pdfIn PDF document text
    • https://wiwawuvagowe.weebly.com/uploads/1/3/4/4/134496439/mudil.pdfIn PDF document text
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/goxedipuz.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/xazovaxawola_jusida_kafijogo.pdfIn PDF document text
    • http://checkmatepizza.com/In 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/1/0498/7423/9646/files/counter_violent_extremism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2435/0871/files/31412094999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5935/5041/files/drill_sergeant_modules_army_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4042/3091/files/zafigekewudavodekej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4078/3008/files/16155500871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1438/9412/files/jemisotexovonosebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/92164919981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/076ccecb-8bf0-4f5e-8e39-ca2623328719/gexajopox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e3c6041-9b63-4dc8-a704-74cef843779d/lukepow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccf3a931-a9aa-46d9-a91f-9acfc935b8a1/9894159461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dff98bdf-4525-4414-9b73-981be04b2d5c/26837484627.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5234de09-c929-43a3-9dfd-9f8f44f47b37/27436680927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3af614af-c060-46b6-8a7d-f44cb9b4ee36/xivomijev.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_off0000510b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x510B 5124 bytes
SHA-256: 486c5bc440021ecb26aa28322b9ebd045331de88fd5c9a15d41f75c9c51f5946
font_01_sfnt_off0000624c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624C 9644 bytes
SHA-256: cc04eb86af246ef6f5dd2b09eb26b151436696a740b731cb075226d1801b7336

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