Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4b14be4f29c324f…

MALICIOUS

PDF

42.8 KB Created: 2020-10-29 20:10:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2cea31f08e7143584cea119fa0f8fd0a SHA-1: 38539fd2377449f3f8212f5ccb4a81a758b17ef6 SHA-256: b4b14be4f29c324fea02821c59a01ef9bb496962f4b75f6a53e77d7976493624
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the presence of a malicious URL indicates a likely phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.cc/pify?keyword=converting+fractions+decimals+and+percents+worksheets+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373749/normal_5f8cb120cef28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f95361bde971.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/duzexefemosaxe/blink_xt2_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/all_android_secret_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/wonowutavodisaf.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/97467996687.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/vusofudepuk.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/surround_sound_test_7.1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46e6d63e-59f7-471e-b297-9ba1c1811c73/rakobawidunawufulusopeluj.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/song_of_the_trees_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/kejojadubonibegologoseseb.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/72016197987.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/40943524018.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/awei_t8_user_manual.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_off000064ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EA 5688 bytes
SHA-256: 4739b325d50528e97fd16324c7ad4661ab86957868a8956441c48e5860f445bb
font_01_sfnt_off0000782e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782E 11028 bytes
SHA-256: ceada309cf3626749a8b580c79e73c4513a1bdd99e7fd9c894939099e830c79e

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