Malicious PDF — malware analysis report

Static analysis result for SHA-256 576218214651da41…

MALICIOUS

PDF

704.6 KB Created: 2020-09-27 12:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 14572b40d1d1ff8e96f43c76fbd4cd7e SHA-1: d870ca062b83b45c59754d5abe00213040f85722 SHA-256: 576218214651da41e57d571f91c440327923eedd2a35dbe5398d867d65ff4bac
94 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirector infrastructure, specifically 'ttraff.me'. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics, suggesting an attempt to lure the user to a malicious site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9655

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.me/pify?keyword=ellicott%2527s+commentary+for+english+readers+pdf In PDF document text
    • http://files.nysutmasks.com/uploads/1/3/2/7/132741429/931545.pdfIn PDF document text
    • http://files.starbabyknitwear.com/uploads/1/3/1/3/131380236/ravijakazusazi-wavasajunerat-jadatukonater-ropowigusekema.pdfIn PDF document text
    • http://files.madisonvetpc.com/uploads/1/3/1/3/131380471/tupetafopediva_timage.pdfIn PDF document text
    • http://files.completelydamaged.net/uploads/1/3/1/4/131412858/taparawa.pdfIn PDF document text
    • http://jekute.godwinacupuncture.com/uploads/1/3/0/8/130873946/lamekukab-gufofufukir-tusep.pdfIn PDF document text
    • http://files.riedelsports.com/uploads/1/3/1/1/131163977/6073561.pdfIn PDF document text
    • http://files.visionsofexcess.co.uk/uploads/1/3/0/9/130969728/6957404.pdfIn PDF document text
    • http://pubifiv.lenisewilliams.net/uploads/1/3/2/6/132695839/3511252.pdfIn PDF document text
    • http://files.whoismarypalmer.com/uploads/1/3/1/1/131163962/9767028.pdfIn PDF document text
    • http://files.kristenkane.com/uploads/1/3/1/3/131383790/7531855.pdfIn PDF document text
    • http://wumarutob.waxologysalon.co.uk/uploads/1/3/0/7/130776611/4404341.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0715/6128/files/tinder_gold_mod_apk_august_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0938/4343/files/11287555374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4949/9289/files/17967488418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6716/3302/files/futosofogusopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1540/3682/files/33151319657.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_off000ab251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB251 5660 bytes
SHA-256: ea0abc6aad02612124da9eb445ce5fb36e6e0b239fa30ce26e884358e5b1ea77
font_01_sfnt_off000ac579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC579 14020 bytes
SHA-256: 49bff274ce54922c98f22fc3c5a20b4d71955260ecabb06c7120a1290224636c

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