Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e72cc945eaccea8…

MALICIOUS

PDF

47.6 KB Created: 2020-11-09 08:46:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 1da818e8632ef7978968e44eeecb378c SHA-1: 598aba43b5b8444dc5cb53d5c0ba790b2a49fe51 SHA-256: 4e72cc945eaccea8254255472a1da27ecdb0582963e6e8d4969a27c364907210
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://traffine.ru/aws?keyword=frieda+loves+bread+yogurt In PDF document text
    • https://palozemoxapido.weebly.com/uploads/1/3/4/3/134366311/vitixazadedej.pdfIn PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/3943693.pdfIn PDF document text
    • https://xivuseto.weebly.com/uploads/1/3/4/3/134316593/3674353.pdfIn PDF document text
    • https://samoxaposem.weebly.com/uploads/1/3/4/3/134361226/fesibenir.pdfIn PDF document text
    • https://palidabelegofa.weebly.com/uploads/1/3/4/3/134316445/kitanisisekafi.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/523bcdf6.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/laresisif_kigadebokenub_bajutinerid.pdfIn PDF document text
    • https://wavixupenug.weebly.com/uploads/1/3/4/3/134386336/8ad070.pdfIn PDF document text
    • https://gedevoliritigit.weebly.com/uploads/1/3/4/6/134686631/rediru.pdfIn PDF document text
    • https://xesamubi.weebly.com/uploads/1/3/4/0/134095888/1381782.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://xuxedoki.files.wordpress.com/2020/11/bobcat_s175_manual.pdfIn PDF document text
    • https://tisobex.files.wordpress.com/2020/11/77923602757.pdfIn PDF document text
    • https://radofet.files.wordpress.com/2020/11/58217746105.pdfIn PDF document text
    • https://likuzow.files.wordpress.com/2020/11/40264502684.pdfIn PDF document text
    • https://towadababaf.files.wordpress.com/2020/11/overcoming_fear_bible_study.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9eb4076-4342-423a-9727-b41947691fe5/savage_worlds_download_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d8f88ef-487f-47cc-985c-d72de8a34a2f/mia_and_sebastian27s_theme_sheet_music_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_off00007a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A95 5248 bytes
SHA-256: edf460685723d9369f5008fa57686d5ac3389b05a301e9877da2e37584d46603
font_01_sfnt_off00008c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C89 10896 bytes
SHA-256: 59ab6d409391ad88464eb05e98bca7b539309f79c23ab9bbc3fc13f3651663e5

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