Malicious PDF — malware analysis report

Static analysis result for SHA-256 69567bf1ebec75da…

MALICIOUS

PDF

41.8 KB Created: 2020-10-28 16:17:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ef1774ef95dfa7953fb5c89cdff93178 SHA-1: 26a6bfa6c9ab303560fca5948cbf2bd24c36f984 SHA-256: 69567bf1ebec75daa8b04b5ff732fc6af729ce645a951ada81dbb727fd725e03
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ggtraff.ru/pify?keyword=fall+good+morning+images'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body indicates an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

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/pify?keyword=fall+good+morning+images In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404523/normal_5f9206743f9fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380681/normal_5f911617cfad3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401546/normal_5f9265c92dfbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401703/normal_5f927d02032af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374366/normal_5f97c60c0de15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382779/normal_5f8f2b22502b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372955/normal_5f8a853abc2db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404313/normal_5f9315cf93ba1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f87138d849e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383131/normal_5f94d8a10c703.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_5f89a3739b3e2.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/tuzamada/nalamipomuvinopazujewab.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/online_translator_arabic_to_english.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/97989845747.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/dogelozenogad.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/jomobowifinof.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/html_to_react_js.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/95600443674.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/92386601679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92031019-c947-462b-a24d-dfbafd9a59f6/sipepevenetumupesolijub.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/english_grammar_book_class_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/882dddb3-e62c-4dfe-b00e-aead2280043c/danezudebusuwumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58cc982b-bea7-483d-8c3a-e73e6f0ba636/wikavodeteripagute.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/qualitative_test_for_carboxylic_acid.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_off00006520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6520 5100 bytes
SHA-256: 30586aada165273e9fd03400fae264f3aeb335fb90fd5d83911559d05d8a3e93
font_01_sfnt_off00007661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7661 10688 bytes
SHA-256: 430c2d697bb88bf2e73d982565297dd31d119f9ea612574a55a54ade6d7e320d

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