Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48e5c09d58e9290…

MALICIOUS

PDF

44.6 KB Created: 2020-10-28 00:35:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 0101cb7cacb76b4ab78abc41c7188e79 SHA-1: ed1e0c0a0e7aab27d5f1aa3bd519305b0cc5a19b SHA-256: d48e5c09d58e9290ea853599fd731998b8e75af32ceb2e4d0e7d21e67ff87318
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to disposable hosting and redirect to known malicious infrastructure. The primary malicious URL identified is 'https://ggtraff.ru/123?keyword=dbq+11+the+industrial+boom+essay'. The document's structure and extensive link farm suggest an attempt to manipulate search engine results or direct users to malicious content, likely as part of a phishing or scam campaign.

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/123?keyword=dbq+11+the+industrial+boom+essay In PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/3868b021d7a585d.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/98665.pdfIn PDF document text
    • https://dowamiwimeguv.weebly.com/uploads/1/3/0/7/130775936/f441854.pdfIn PDF document text
    • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/gikuxi.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/9391773.pdfIn PDF document text
    • https://muwidewosavuli.weebly.com/uploads/1/3/4/4/134435377/jujafoxixipofotanavu.pdfIn PDF document text
    • https://junafoxotoroj.weebly.com/uploads/1/3/0/7/130738975/niwudexutisoboruro.pdfIn PDF document text
    • https://jobugatiponez.weebly.com/uploads/1/3/4/2/134234820/xuvujupifinuzov-veruvib-rutimuni.pdfIn PDF document text
    • https://zifidobu.weebly.com/uploads/1/3/4/3/134371145/dolilokaxurotopagad.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/a088a01.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/1/0433/0219/1269/files/radiology_case_reports_guide_for_authors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5741/2779/files/lux_lite_apk_mirror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3331/1897/files/21820907736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7778/8582/files/computer_structure_and_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/9706/4095/files/41965964256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c7e5991-d9e9-4a74-b8e1-fad370040866/kamemuwasidibinobelaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea0651b8-39e6-4181-bb17-f93b04998ead/xoxekajigupowitinazolak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86621038-14da-4155-ad8a-1c26b8152534/26990461695.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/cbse_class_12_physics_practical_experiments_list.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/business_model_generation_canvas.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/18437554667.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/jobobil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff15c914-62e1-4de1-874f-adb43691c0d4/42038758075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6127d716-ad4b-4914-97f2-a5a22c5a6698/buzexuvugazenomakusex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e549ebf-5d23-486d-b4ed-bad83e88eec5/best_cochlear_implant_for_toddlers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b6e3188-bb46-407d-814e-3a70344ae578/dixubowokalojutubafoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a497375-2704-44fe-bc9b-14f3e1f47012/sebavemisumamozigudedi.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_off00006e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E38 5484 bytes
SHA-256: c5bee89d6e5d20bc9f2d8b238106cea6118bccd6982a5931b19bcd213cc265fa
font_01_sfnt_off000080b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B0 10496 bytes
SHA-256: 7063b891d8abf9c1e17d03372a9472b2935c7244a0c429cfab6b714e046f4c5b

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