Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ea060dfe7861965…

MALICIOUS

PDF

39.7 KB Created: 2020-10-17 07:20:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4f35cb0393c78d049483f592d0425a30 SHA-1: b61cc92434c90476b7cfefdc86e3b10aafc49ea9 SHA-256: 1ea060dfe7861965c25bf789566e7a2cbbf3b82a4c3356bf7f41a448135a13b9
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=guide+auxiliaire+de+pu%25C3%25A9riculture+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_5f8a30a30ca9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5f87c728b1d3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f873067ca520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366384/normal_5f88b20eead59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371508/normal_5f89233903fe7.pdfIn PDF document text
    • https://jumuwubugunitus.weebly.com/uploads/1/3/1/0/131070493/95dc3.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/nukexifepejisox.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/5631190.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/3449483.pdfIn PDF document text
    • https://fifowekuvepu.weebly.com/uploads/1/3/0/7/130776735/47a91673.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/lofaxifemag.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/4686de04f4.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/1/0504/1497/7198/files/zijebutifovotumeketuxuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7482/1527/files/how_to_grill_steven_raichlen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/8666/3846/files/vosumifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1702/6715/files/vegukufopinagipix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/phet_gas_properties.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6999/5715/files/fadeloge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8276/7267/files/factoring_trinomials_a_1_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1719/8497/files/dmv_sample_test_2015_california_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3819/4843/files/ide_hard_drive_vs_sata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/3049/5399/files/johnston_kennedy_belfast.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_off000059c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C2 5212 bytes
SHA-256: f0369469e984004ede000af41c5e4af740b2f67e08a28845f8922466cf96d61e
font_01_sfnt_off00006b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4F 11416 bytes
SHA-256: 1144305594cd352c2c31cd54c872d8baa6812e19c1ea7f5dddedfd00276034dd

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