Malicious PDF — malware analysis report

Static analysis result for SHA-256 42214d605f6ba38c…

MALICIOUS

PDF

36.5 KB Created: 2020-11-03 16:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1dcaa974ed415d7a3a85b9c6ce35215e SHA-1: 16e228049b8951a18c327d623940f3c78bfa5b8b SHA-256: 42214d605f6ba38cd0f7c583189cf2e77df3334c65d2d8b349bf26ca847146e4
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One prominent link, 'https://ttraff.club/123?keyword=la+lupita+san+jose+del+cabo+reservations', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?keyword=la+lupita+san+jose+del+cabo+reservations In PDF document text
    • https://jufavufopu.weebly.com/uploads/1/3/4/3/134340263/vumibo.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/mugubinudud_fiwokifus.pdfIn PDF document text
    • https://bemaxeviliw.weebly.com/uploads/1/3/4/4/134482954/zenugorelod_kigen_fedasizexet_lopasiji.pdfIn PDF document text
    • https://mogidudurunupiz.weebly.com/uploads/1/3/2/6/132695636/xezulenokopege-bosujaxizuj.pdfIn PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/1edc4e0.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/xumowobe.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/turip/pinojaxadurola.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/vtech_model_cs6829-26_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/acdelco_parts_catalog.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/80343644728.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/durban_south_africa_real_estate.pdfIn PDF document text
    • https://s3.amazonaws.com/nazezawovi/ninja_kidz_tv_movie_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3ceb411-f230-4064-85d0-939759ee7ef5/23280912406.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/sustainable_competitive_advantage_is_most_likely_to_come_from.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/scatter_plot_worksheet_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd548f40-0b14-48cf-b904-df1509e697af/56567589277.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_off00004ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED5 5284 bytes
SHA-256: 1befc4e30684caec0625702e605d8f8bfddb2bb8760fd6326b0eee4bbad447df
font_01_sfnt_off000060df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DF 10828 bytes
SHA-256: 32afaf761e0e4ad7f26ebab81428842bc8bc507208978dfb53b954eaba5cc472

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