Malicious PDF — malware analysis report

Static analysis result for SHA-256 975bf5cd255a7b2f…

MALICIOUS

PDF

50.2 KB Created: 2020-11-04 14:38:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c293a35654dca78bab976cb04e193b83 SHA-1: e47b563cddd49841d634af643332d4c570e883ab SHA-256: 975bf5cd255a7b2f71445ca334ff5f4eb921465166ef45db78da65518b425f3e
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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 critical heuristic indicating a malicious redirector link. The embedded URL, 'https://ggtraff.ru/aws?keyword=the+tarantula+keepers+guide', is likely part of a phishing or malware distribution chain. Although no scripts were explicitly extracted, the PDF structure itself contains embedded URLs that are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/aws?keyword=the+tarantula+keepers+guide In PDF document text
    • https://takaranedo.weebly.com/uploads/1/3/4/0/134017801/3643602.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390069/normal_5f917db13eee0.pdfIn PDF document text
    • https://tozuxixawijere.weebly.com/uploads/1/3/4/5/134523333/basewikupomepifuzo.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/mimupelowoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402481/normal_5f9137ee2ebb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408851/normal_5f9fc4c609021.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378857/normal_5f8fadcf29f5b.pdfIn PDF document text
    • https://nopubekekav.weebly.com/uploads/1/3/4/5/134511336/luziwemelona.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426080/normal_5f9e82dd630a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379723/normal_5f8a6bd4cc649.pdfIn PDF document text
    • https://rusezoxebob.weebly.com/uploads/1/3/4/3/134355184/zisekurijezijirofuzo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406785/normal_5f9f10954453f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/53442966124.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/wilton_garfield_cake_pan_1978.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/examine_supplement_goals_reference_guide_download.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_off00008557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8557 5232 bytes
SHA-256: e60d06764bed5e3c715c0afc66899f5f5a0de522116ece30f81b210ee2674bf7
font_01_sfnt_off00009719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9719 10772 bytes
SHA-256: e5797c545f47806a52bc694d6d019e8e2457734aaaf7145f4b3c36f005959c1a

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