Malicious PDF — malware analysis report

Static analysis result for SHA-256 6249acfae02e7cf8…

MALICIOUS

PDF

46.5 KB Created: 2020-10-28 18:03:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 4f084bfa9bef7d1e0d9351dd63efd347 SHA-1: ca8696677346d7f52dd53868d84c811eabbdf626 SHA-256: 6249acfae02e7cf814e35f1fffd3a53f1842be83dcd5b46822e31cae544b35cd
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=skinning+trainer+classic+ironforge In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f87a9f3d959e.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/xejofereg.pdfIn PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/rarotit_vujuveloxad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380530/normal_5f8baf65f2d88.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/soxakupowaviguw.pdfIn PDF document text
    • https://numuluga.weebly.com/uploads/1/3/4/3/134307024/33d956507.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/8922801.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/mowebalada.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/5968648.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/fuzidex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405638/normal_5f93abb7bc6be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f8d468499db6.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000073e7.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000073e7.bin)
    • https://cdn.shopify.com/s/files/1/0505/5935/2990/files/fijojore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/business_communication_today_10th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3826/8318/files/texilatibesipivukonowar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7248/7076/files/xorebimodajazijujem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0002/0130/files/63894453692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6134/4406/files/san_bernardino_peak_permit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0076/8930/files/94231309378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9448/4147/files/95684402996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7865/9477/files/magisterium_book_5_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3362/files/align_chakras_guided_meditation.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_off000073e7.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E7 5216 bytes
SHA-256: c98e3ec4a50aa1497765597b61b7d75db00851546017a407dba1290f4606754d
font_01_sfnt_off000085bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BD 11532 bytes
SHA-256: 8bf0fa86aa01d93c27ae346c93d51ae2b037c421b19bf1665b3e1d22aaa7cc7c