Malicious PDF — malware analysis report

Static analysis result for SHA-256 703c0d8878d6fe1e…

MALICIOUS

PDF

40.5 KB Created: 2020-10-28 15:10:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: e1f793aeb8d19230b142976b16da52e2 SHA-1: 21b059752b7bada156f49ba8d8191d5d0d847663 SHA-256: 703c0d8878d6fe1e243ed80554707acccb520555c4db9d09ea65042d8b2a1f33
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://gettraff.ru/123?keyword=chevy+impala+ss+manual+transmission In PDF document text
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/6425047.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380230/normal_5f8b2ddbc709d.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/botubufisoso-rewunal-nuzoxotexigiza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409113/normal_5f948c6b459ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414335/normal_5f98bf92359ca.pdfIn PDF document text
    • https://duroxogudoli.weebly.com/uploads/1/3/4/3/134318703/daxijifuxosig.pdfIn PDF document text
    • https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/zosivoteferesijot.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/voked.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bdb3da4-a391-4a01-8eeb-7ed1d661e92c/xegunimigixemebujevoman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0039/2603/files/86175321028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2056/5156/files/saxivozepumiwatamopazoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2845/4842/files/reading_comprehension_grade_5_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8508/5870/files/92377157010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4246/2618/files/kabhi_baat_nahi_karenge_aapko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7770/8197/files/jacquielawson_com_cards_christmas_asp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/likes_for_instagram_apk_para_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5560/2078/files/79125557011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eae1205b-70fb-49c1-a78a-38ee8554544d/philips_intellivue_mp30_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/research_proposal_questions_and_answers.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_off0000609e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609E 5128 bytes
SHA-256: d3514167393721b04a5fd746abb73dd5da2e50e7e4bcd981bb7697fecb5f5407
font_01_sfnt_off000071e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E5 10252 bytes
SHA-256: b3d3a186c0907ee65346abd358307088be6e7ed01ae33240604c29f0e5504299

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