Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaeb292ef759c3c9…

MALICIOUS

PDF

36.6 KB Created: 2020-10-08 12:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cedd4661e05f71019023b6a1266c71b1 SHA-1: a47119d9ed9bbed135ce072996d992e00bc3f20f SHA-256: eaeb292ef759c3c955cf43c70ef8a3377e057c7e263992ed20b95b6fda4d2ba8
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://ggtraff.ru/pify?keyword=presto+fry+daddy+instruction+manual In PDF document text
    • https://site-1039534.mozfiles.com/files/1039534/13897116368.pdfIn PDF document text
    • https://site-1041492.mozfiles.com/files/1041492/seziwilijagesu.pdfIn PDF document text
    • https://site-1043222.mozfiles.com/files/1043222/99263298176.pdfIn PDF document text
    • https://site-1037891.mozfiles.com/files/1037891/53893740469.pdfIn PDF document text
    • https://site-1036828.mozfiles.com/files/1036828/tidogujinewajorigekivideg.pdfIn PDF document text
    • http://jatuzokib.marissamoses.com/uploads/1/3/1/3/131380345/2056809.pdfIn PDF document text
    • http://files.benjaminfordham.com/uploads/1/3/0/8/130814623/vorep.pdfIn PDF document text
    • http://files.5thstreetfinancial.net/uploads/1/3/2/6/132695372/fezalowi_fajukururufo_ratajo_dakagelotifinur.pdfIn PDF document text
    • http://donobog.fourcornersuk.com/uploads/1/3/0/8/130813084/zevezomonapib.pdfIn PDF document text
    • http://files.hanoveryouthwrestling.com/uploads/1/3/2/6/132683127/b975f045.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/1/0430/6829/3287/files/pujopaworasowekew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/the_closers_survival_guide_book_free.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_off00004f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F96 5268 bytes
SHA-256: 53a15c111d9cc866c295a4089bbac848b1de3765cd6f97e846ab6f559347543b
font_01_sfnt_off00006175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6175 10780 bytes
SHA-256: 0aa494adb52c49e56a218505834d20e64fce398d31a65ff85bbf32b926431cdc