Malicious PDF — malware analysis report

Static analysis result for SHA-256 1472c21bf34a7b30…

MALICIOUS

PDF

70.2 KB Created: 2020-12-20 07:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 96e1455a272cbfbc7ebe5b2d9a8fc9dc SHA-1: 5822fd018b1d876ae5d4f814fc153ad1a9965862 SHA-256: 1472c21bf34a7b30efcb81b075e053770c82a9a054bbe442d77cbb1154ebae1a
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to known malicious redirector infrastructure and link farms. The document body, though heavily obfuscated, contains text related to 'My Hero Academia season 2 dub', likely serving as a lure. The presence of embedded URLs and the heuristic firings strongly suggest an attempt to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/strik?utm_term=my+hero+academia+season+2+dub In PDF document text
    • https://xososikanezav.weebly.com/uploads/1/3/4/8/134892973/3566f3dd34b4.pdfIn PDF document text
    • https://vemugalibi.weebly.com/uploads/1/3/4/4/134484787/lokix.pdfIn PDF document text
    • https://xigujevaw.weebly.com/uploads/1/3/4/7/134701692/9ad2765522a.pdfIn PDF document text
    • https://vadutebo.weebly.com/uploads/1/3/4/8/134889136/8d4e04ae15f48e.pdfIn PDF document text
    • https://vaxokivov.weebly.com/uploads/1/3/1/4/131453734/tesevadegexuliro.pdfIn PDF document text
    • https://jedamebised.weebly.com/uploads/1/3/4/6/134651392/0758136d.pdfIn PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/tetokesajemidop.pdfIn PDF document text
    • https://jugurapofan.weebly.com/uploads/1/3/4/3/134339640/kubapugu.pdfIn PDF document text
    • https://zugozoriv.weebly.com/uploads/1/3/4/7/134770463/naxegaza_fozoxegemoju_jidetonelegaj.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/6265756.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/sasimusinomojiput.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fdc7a3b0a190b16b315946c/t/5fdd25c0456d1f3a760fd933/1608328642253/purple_butterfly_wallpaper.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0f943485235c868cc1ca/1606291348804/17928549493.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde88431076b30d0a95c29a/t/5fdeaf0b459323513bd3ae7e/1608429324351/68136428774.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/chicken_invaders_1_game.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdeb3dd109152533654cd3c/t/5fdecb97e64f570315327c6c/1608436634107/18972751514.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC86 3228 bytes
SHA-256: f43b2c9b56e0a7e98bbcec413e9aac8285fc721c1fbf8d9e81325eea8a8d568b
font_01_sfnt_off0000c7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7FB 5328 bytes
SHA-256: b17b755ece5520beecc74fc682b3000c1717b68e5e6ee0c46ef029be13bebbd5
font_02_sfnt_off0000d9ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EC 10368 bytes
SHA-256: 67dd893f64058ccae111bcc793855a2de59dd179eab67b8ee9147415eef9448d
font_03_sfnt_off0000fd75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD75 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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