Malicious PDF — malware analysis report

Static analysis result for SHA-256 716e04a695e38227…

MALICIOUS

PDF

40.5 KB Created: 2020-10-28 13:59:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 77b1ecda10427d2a9d5191ee92c2ece6 SHA-1: 99282b447819aedb4ba2c9d2d36216d406e91db8 SHA-256: 716e04a695e38227fdb7347092a0b663751f546e98635e42a4d24747ec737a14
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://ggtraff.ru/strik?keyword=handbook+of+psychology+volume+11+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5f927d6284320.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5f8c17e4e5b7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373755/normal_5f90cf7a1dfb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374366/normal_5f89c1538fb39.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zetare/kizabiwaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/964c2f9f-9362-4567-9979-9ba4b05fa793/59868633647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1c8a908-398e-491f-a9af-cbcdbcd761f9/75800018360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8bb48b0-1f83-48d7-a3f1-47327cd3949b/60651441842.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d3f8881-2299-4b78-88b1-e39c3e636d53/66995256931.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/18744329387.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cfbc5e9-5a6c-4b6c-b6fb-161310b3037a/27226861068.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/smartphone_addiction_scale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27e98b60-6ac2-47f9-9456-feb631996b29/jedirozip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3e67b69-31a8-4ee1-9c64-97a006123312/90537748903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/096c6630-12c1-4f86-8d09-aa33f75686a8/22449412973.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/zanuwonujeneboxid.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/54765839473.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/44404957960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/969ba208-008e-45c9-9dc3-749698d979fa/luminorefejegidowuze.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_off00005d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2F 5852 bytes
SHA-256: c232335d652caf1bb3c8c0c429680c1c4f0842f39ad9076b82abccf1afd322ae
font_01_sfnt_off00007111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7111 10796 bytes
SHA-256: 1811ea1207d8992fafdbaf1f84bc7336415015737c5ca7f81afe9e8e5ac7f73a

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