Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0ec64dce39320a…

MALICIOUS

PDF

39.0 KB Created: 2020-11-01 16:44:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1f02bbe36842fd367b68656fb8500e54 SHA-1: 1da3b3d9bc1ccef9d75b63adc6aaa28e9f38bdcc SHA-256: 9f0ec64dce39320a66257ca7e2342da968d048a54312a5e43827c73441bc065f
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'https://ttraff.ru/123?keyword=ab+dekh+khuda+kya+karta+hai+6'. The ML classifier also flagged this PDF with high confidence. Although no scripts were explicitly extracted, the presence of embedded URLs and the malicious redirector strongly suggest an attempt to lure the user to a malicious site, likely for further exploitation or phishing.

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.ru/123?keyword=ab+dekh+khuda+kya+karta+hai+6 In PDF document text
    • https://sokegipamemaxo.weebly.com/uploads/1/3/4/3/134345901/5c75700.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/8a8cbe53-2ec1-403e-ac52-3a30bcac8de4/nosenula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7008/6051/files/telecharger_application_vlc_android_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/1637/7277/files/the_wild_hunt_ukulele_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fa3e00c-fc18-4d2a-84fd-35521725e52a/moxevokinika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61b930e6-6546-4113-a60e-586d3a60cd4e/zotefesewapamuzofazumula.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/gemujogalal.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/zimujutawitesofejogezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5392/2496/files/67378260272.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/darker_shades_of_elise_official_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/acer_t232hl_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62024f34-a07f-4b1f-992d-d31fbc689b4a/nujeranejiveratatutixojur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a9192d3-d810-4ecf-84e8-2c639c6393d2/59414415768.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/afk_arena_beginner_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/kazuma_kiryu_english_voice_actor.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_off0000589c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x589C 5152 bytes
SHA-256: 537e9cdd1d61ce91e2b7fb0093d2311c7270159e3d14888f91ca770f2eac56d8
font_01_sfnt_off00006a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A28 10848 bytes
SHA-256: 5612cbce550727fbc1ae8c03e56689b2ed86b62c4bb21eaf7bde9fa6b7b693f7

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