Malicious PDF — malware analysis report

Static analysis result for SHA-256 484ab38b2d4a8fc8…

MALICIOUS

PDF

34.1 KB Created: 2020-11-06 19:06:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 499f286f795cf62cb64d43bba15f44d4 SHA-1: 3f83839f8ded23d92da36190c77c446cd02ce897 SHA-256: 484ab38b2d4a8fc8473426cc24c76ad4662b591a87a19041c34b9730d2fdef36
94 Risk Score

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://gettraff.ru/aws?keyword=newt+death+scene+in+maze+runner'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the redirector suggest an attempt to lure the user to a malicious 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://gettraff.ru/aws?keyword=newt+death+scene+in+maze+runner In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408479/normal_5f9ec90452d8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_5f8a7b8fa4be0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464055/normal_5fa4a2e60e50e.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/gupawupigawono/cervical_cancer_screening_guidelines_acog.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/woxinakofurexufevom.pdfIn PDF document text
    • https://lukamukiza.files.wordpress.com/2020/11/kodemusibawesa.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/occupational_safety_and_health_act_kenya.pdfIn PDF document text
    • https://fefitaw.files.wordpress.com/2020/11/64939725781.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/oxidation_reaction_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunoje/woxaxepidulamo.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/guide_gear_box_blinds_48_x_48.pdfIn PDF document text
    • https://jopafez.files.wordpress.com/2020/11/29741260071.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/85335037078.pdfIn PDF document text
    • https://mutozofe.files.wordpress.com/2020/11/65548376527.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_off0000469a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x469A 5256 bytes
SHA-256: d81a3dd918b88bd3018a979decdf3938f87429bc12d6a4b3173511f36f31561d
font_01_sfnt_off0000586d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x586D 10344 bytes
SHA-256: b3d4c41e39a43c24076069dc3b5a14bcca89097c0199cc5092c6531025a85064