Malicious PDF — malware analysis report

Static analysis result for SHA-256 972cd28c0cd2dc85…

MALICIOUS

PDF

47.8 KB Created: 2020-10-23 23:39:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: a672f8ff43b89e5c437c688044e0de3e SHA-1: 644cc357bc6e308c3f3c8552b0a1c5fa6e7d448a SHA-256: 972cd28c0cd2dc857e068b3cef74f70d52104484b61b4e5ed8cf54e59c1a46a7
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=trivial+pursuit+friends+instructions In PDF document text
    • https://wuwuleli.weebly.com/uploads/1/3/1/3/131398564/xidokaverizax.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9594994.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/6075611.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/b4502b2b8a19a6f.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/revezurofow.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/kanofobelosi.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/1/0433/7808/1959/files/specially_designed_instruction_for_executive_functioning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8331/7926/files/tivowamuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6810/3077/files/surface_roughness_parameters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/1885295287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9f8d40d-08a9-4910-854a-a0b5ad3fdfe0/wugus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58a71c09-c6d1-4cc6-abef-2219353df306/26748538225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af9e4b05-79e8-4226-bd65-a40843714298/rozuvezosurizovogife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1404ae02-9e25-4c93-b902-f41792e5435d/dejonuruneku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ada4fbd-4286-41f5-8755-d02be194f245/kabolovutejomep.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/international_business_bcom_hons_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/83056866039.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/xunita.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/bivobebutifodadiboki.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/wepubatataw.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/amie_examination_form.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_off00007c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C45 5156 bytes
SHA-256: e0f5cf54e52b97509c22c1e699fa845faebfa80c048be983c70570e8d59c272c
font_01_sfnt_off00008de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE5 10532 bytes
SHA-256: c68981b631876b49dc948fcbccf1a1333a2908d5678ef8fa297053db45920631

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