Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e5b2d658dca62a0…

MALICIOUS

PDF

41.0 KB Created: 2020-11-07 04:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d4a6742b3b63547a13003844bba1d41e SHA-1: 24a1f13088daba64afcd86e2e8d664694ee68f5b SHA-256: 4e5b2d658dca62a0b967fca3d8cdd4eca087e7fdab189b08c51576bc8a465f99
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector, ggtraff.ru. The document body and embedded links suggest a lure related to 'flicka country pride 2012 cast', likely a pretext to entice users to click on the malicious URL. The presence of numerous embedded links, many pointing to disposable hosting, further supports a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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/123?keyword=flicka+country+pride+2012+cast In PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/1945468.pdfIn PDF document text
    • https://pufotawimudob.weebly.com/uploads/1/3/4/3/134380049/nezosi_wagitotidapos.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/6441432.pdfIn PDF document text
    • https://wekijoborumotis.weebly.com/uploads/1/3/4/4/134484899/legik.pdfIn PDF document text
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/fomotonidifalu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://mijevefiwi.files.wordpress.com/2020/11/damawasivuxuxavajodax.pdfIn PDF document text
    • https://kebupud.files.wordpress.com/2020/11/16674380217.pdfIn PDF document text
    • https://wepigun.files.wordpress.com/2020/11/nopevifivibilemafelifix.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/english_books_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b5ac198-f4ff-4c9b-9c27-72f94d35a276/pukakufezozariv.pdfIn PDF document text
    • https://vivader.files.wordpress.com/2020/11/vujononinevivasutotisuw.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/jolees_easy_image_light_fabrics_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/crat_exam_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/48212699110.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_off00005f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4F 5516 bytes
SHA-256: 38d6dd75d87b70e3ea54a48964e9b07e972710233cd2a161ae14685c7f163e72
font_01_sfnt_off0000722e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722E 10880 bytes
SHA-256: 3bae01ac91058e4eb152f07964892bbcbe455dc12f800d255c7613cc70f795f7

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