Malicious PDF — malware analysis report

Static analysis result for SHA-256 28ad30b2dbfd7b66…

MALICIOUS

PDF

64.3 KB Created: 2021-01-21 08:42:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b9460f9789c51c7d13bcf2eaca1e9a3f SHA-1: 8baa217135573e58b552ad1bac50035e1ce214b2 SHA-256: 28ad30b2dbfd7b66b0165de77e9542bc44bf8c8bd3aaf947e0faa7e16e030ff6
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/123?utm_term=aleader+water+shoes+canada In PDF document text
    • http://rozapunu.22web.org/jedonujamomoposelaw.pdfIn PDF document text
    • https://site-1245635.mozfiles.com/files/1245635/cost_estimation_template_for_software_development.pdfIn PDF document text
    • https://site-1225538.mozfiles.com/files/1225538/bass_pro_shop_springfield_missouri_address.pdfIn PDF document text
    • https://cdn.sqhk.co/resasenubori/hSjaih7/boledimebewejik.pdfIn PDF document text
    • https://site-1168177.mozfiles.com/files/1168177/65961569713.pdfIn PDF document text
    • https://site-1166725.mozfiles.com/files/1166725/sad_anime_girl_hd_images.pdfIn PDF document text
    • https://site-1176552.mozfiles.com/files/1176552/altaf_raja_song_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/fijjdw8/23294617503.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mirepili.epizy.com/movametaf.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/21252376021.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/jubimogaxexudufujuv.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/civilization_2_ipad_guide.pdfIn PDF document text
    • http://xediguvodolej.epizy.com/90766270637.pdfIn PDF document text
    • http://tipixerokofor.epizy.com/93490284465.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/archery_games_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/pure_android_phones_2019_india.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/word_scramble_games_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/vubapona.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/pofexesawofedobomotiv.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/xukupu.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_off0000be9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE9B 5108 bytes
SHA-256: c7344453d64005719b0124b3f53a093412a2e10e5f9a82c734f4dec7a54f42ee
font_01_sfnt_off0000d005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD005 10348 bytes
SHA-256: e167130445f600f710bebd7c9e3aafa8fdc31018c89e569337d9b8aa1de16511

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