Malicious PDF — malware analysis report

Static analysis result for SHA-256 14bee2147980fa6c…

MALICIOUS

PDF

57.5 KB Created: 2020-08-21 20:21:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a7f54cb71a4accb83d035dec5809ead SHA-1: c75ca3506a444c5b39bde0dd07ba910e4db86d66 SHA-256: 14bee2147980fa6ccbe731d095ebd7eface1f994bb1a98374f9539bee92bef34
154 Risk Score

Malware Insights

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

The PDF contains embedded links and document body text that mimic academic content, specifically 'Proyecto de tesis pdf contabilidad', to lure victims. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the primary link leads to known malicious infrastructure, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the nature of the links and the ML classification point towards 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 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.com/pify?keyword=proyecto+de+tesis+pdf+contabilidad
    • http://xatejubam.kelscustomcabinets.com/uploads/1/3/0/7/130775982/7657979.pdf
    • http://files.travelandfellowship.com/uploads/1/3/0/7/130739564/nimuzidosuzisigiwir.pdf
    • http://files.lifechurchpccf.org/uploads/1/3/0/8/130873820/9fda410c97.pdf
    • http://files.sustainableartschool.org/uploads/1/3/1/0/131070485/2332046.pdf
    • http://files.learndeveloplive.com/uploads/1/3/2/6/132682745/28224a8fd3539.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/lejafiwopilevapebujo.pdf
    • https://cdn.shopify.com/s/files/1/0436/3331/1904/files/65179525990.pdf
    • https://cdn.shopify.com/s/files/1/0435/2373/5720/files/26464876928.pdf
    • https://cdn.shopify.com/s/files/1/0441/2253/8136/files/essential_elements_2020_alto_saxophone_book_1_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9651/files/marriage_anniversary_video_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/megufiwodenodese.pdf
    • https://cdn.shopify.com/s/files/1/0461/9560/5667/files/nadovupelowediwerufas.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/ag_lafley_playing_to_win.pdf
    • https://cdn.shopify.com/s/files/1/0431/5919/1712/files/funotixelevewavojebojaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9374/5046/files/64340625133.pdf
    • https://cdn.shopify.com/s/files/1/0432/1699/4466/files/fitudixegefukegojupogi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8011/2535/files/square_root_of_205_in_radical_form.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007092.bin
093e40a86fd6d0c053d4c7072cbdc68795ebe30b5f0116612614b7bba6e11eaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7092 5180 bytes
font_01_sfnt_off0000822f.bin
8317cd94aacd0e6fd2e5c5989436fc68523f0f63f127755fdc62916090c89fd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x822F 2512 bytes
font_02_sfnt_off00008d22.bin
dfb920b44fe704205342436dd664a493d3fbc56a3e6842f3624367970d340d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D22 11052 bytes
font_03_sfnt_off0000b121.bin
122c9994f418b8fdfecd7a46de4601d61427cece1926ebc5427d1a9b45d4969c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB121 16648 bytes
font_04_sfnt_off0000c80f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC80F 4324 bytes

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