Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c5b5459ceff231…

MALICIOUS

PDF

44.4 KB Created: 2020-10-14 20:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f14809c31e6ab3fc5a1a42042601b5d8 SHA-1: b20bf5ed2eb609a85d48cea868bf22c0df3ffc8d SHA-256: 98c5b5459ceff2317ef378157d524bc3597811a7b4bcd83d1f5560c03a82701b
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?keyword=ayyappa+swamy+jeevitha+charitra+telugu+pdf In PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/309006dd.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/5238855.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/xuguzebejazeg.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/lefexoserizemojogi.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/36ce75ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f86f9b26e501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f86f93d5f68d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f86ffda18907.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f8705578873a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f87044b7c547.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f8717d3e736e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f8705cd21352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f871bca777e1.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/1/0434/3264/0664/files/tatuajes_para_el_brazo_pequeos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2868/4212/files/wolfman_tank_bag_canada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/wizardry_7_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3210/7937/files/inuyasha_movie_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0917/8267/files/propane_deep_fryer_commercial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e01b067-49f4-41a3-9650-7474a9e59a11/73208579863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e4f1c02-0c62-4292-9d34-7f4a01e26f22/nimameduzosuwoboneki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/267e6512-510b-4f59-9ae6-3961c543efc0/kijewanuvarurarar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37f1eeba-a620-48ea-bffc-f997bcdce2a5/66302416560.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_off00006325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6325 5888 bytes
SHA-256: 0287e7bad6498b342e8b38edcb5fdf7b279271c6d1469aaf766334fc05bdfce0
font_01_sfnt_off0000772a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772A 14664 bytes
SHA-256: 3d23bb2d21cc06239fe1464de6c96e19b9478afaf605e7ad3519824d1ee52f14

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