Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c980aca2178f437…

MALICIOUS

PDF

48.8 KB Created: 2020-10-07 01:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ff6718d4d0467781dab5e0a56883b3fb SHA-1: 9f0e2db2594797a39affc2a147fa62c2c0e4b34a SHA-256: 3c980aca2178f437c0be5793cf41514c05087aaaff2c1ca54b20db7ff9ca6c12
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The document body, though heavily obfuscated, also contains the URL for the malicious redirector. The presence of multiple links on disposable hosting further supports a malicious intent.

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://ttraff.club/pify?keyword=make+your+own+family+crest+template In PDF document text
    • http://minadi.fireantfestival.com/uploads/1/3/0/7/130740265/worigulefaleja-tomobigenoti-sewir-dimalalixodurub.pdfIn PDF document text
    • http://files.kristendybala.com/uploads/1/3/0/7/130776539/063fe1462eaf.pdfIn PDF document text
    • https://site-1043878.mozfiles.com/files/1043878/fezuj.pdfIn PDF document text
    • https://site-1041950.mozfiles.com/files/1041950/xopulonamiwololuvetuvafag.pdfIn PDF document text
    • https://site-1042554.mozfiles.com/files/1042554/72289204709.pdfIn PDF document text
    • https://site-1039132.mozfiles.com/files/1039132/65445424340.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/1/0430/9850/5377/files/physics_worksheet_conservation_of_momentum_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8088/4119/files/subufujejoradi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6340/0861/files/vuvemanazuzetewofufosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/9742/5567/files/kellin_quinn_biography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6db37514-a095-4bd5-a741-523684dec5a2/donivunedijega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/953cab7f-2c0a-463e-8ded-3671cb98d9f9/67473538146.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ed4b521-7a84-41c2-aa45-fac7a8bd3a14/58201682680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1958e48d-f4f8-42ce-980e-dc203cbb5b2f/vetupisotepi.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_off00008061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8061 5424 bytes
SHA-256: 6482baa8a151ef1847bd008b6aa65792eb1a351f61a328639a5f8cf3d4eee0f6
font_01_sfnt_off000092ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92EC 10420 bytes
SHA-256: f280946936faaf4280e4909cd20062ba1166dd35c3efce98c367c2cbbca602dc

Open this report in the interactive analyzer, or submit your own file for analysis.