Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe79bf50dc070670…

MALICIOUS

PDF

38.8 KB Created: 2020-11-02 21:15:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7997615acf10a96fce993e7ab734e61a SHA-1: 90aff904468720eaf79f33435b8adb72dc38bacf SHA-256: fe79bf50dc0706704682fe130bbae1ab15bec2b2f425113c1ecee96130d05271
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL, https://ttraff.ru/123?keyword=united+hebrew+cemetery+new+york, is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, but the presence of a malicious URL strongly suggests a spearphishing attachment attack vector.

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://ttraff.ru/123?keyword=united+hebrew+cemetery+new+york In PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/rugifiwuxipilede.pdfIn PDF document text
    • https://wudizibi.weebly.com/uploads/1/3/4/4/134477582/tenagapirufi.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/1/0501/5031/0067/files/91152863439.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/40484176778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3595/7147/files/glencoe_geometry_chapter_11_test_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/mekogenasitusupanudegixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4623/8880/files/dirunegewobetisivodomag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1651/8805/files/vuvakekuxugufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/0695/6970/files/tatung_rice_cooker_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8886/9055/files/tedebiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa1ea8c4-b572-411e-a508-442732892bbd/pifodosusawotutokulimovom.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/begone_satan.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_off0000585f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x585F 5148 bytes
SHA-256: ca6dfbb13723e0582ad648f30cd236a2528451e21955ebe5faa4628b31345e90
font_01_sfnt_off000069cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69CF 10780 bytes
SHA-256: c4d560f269cea9a290bc5623b0a6f16b97e71651089b75cdc84b6eeace506d3d