Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c986fceb180cd8…

MALICIOUS

PDF

72.7 KB Created: 2021-01-05 03:56:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 44334a5083144a809563f12fdd156bbc SHA-1: 06cb62fd194c465661085d2e6b20a2e5474efd66 SHA-256: 68c986fceb180cd8b9c8942e8b1b530b85a6cb3969d4b38cb58682b549c9c008
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 0.9997

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://cctraff.ru/aws?utm_term=cheat+engine+6.+7+tanki+online In PDF document text
    • https://cdn.sqhk.co/zifakepavax/N6Eibih/pokimibe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472503/normal_5fc054f1e5bc7.pdfIn PDF document text
    • https://cdn.sqhk.co/rosafipex/glSjeih/11603532664.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375070/normal_5f9379057ca0e.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/eLijLEn/guidebook_for_marines_17th_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/zafazegig/bpFqRib/word_games_with_friends_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/WLCAJns/itranslate_translator_dictionary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f9720ca93487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368475/normal_5fa70a0648094.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ddfca8a-7f8a-40e5-abb8-39e961ec5c6c/52022771079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eb29929-9c17-4e0a-b50e-47fd64fbb072/pathfinder_deific_obedience_erastil.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/fractions_decimals_and_percentages_worksheet_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/xirilipuloxifu.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/30148639724.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/36645964215.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/pebulumin.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_off0000dfe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE3 4908 bytes
SHA-256: daa2ed067192f2bc4233dec2466de4b5603933be63bb62fa772f5260a393f628
font_01_sfnt_off0000f0a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A7 10968 bytes
SHA-256: c670901114e5f34e7fb35f835ded9f6d1a59ea94e39301c51083584ae80d9ad6