Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ccdc1d77ce3852…

MALICIOUS

PDF

106.7 KB Created: 2020-10-28 10:36:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f6e7dcb83700bd062cd0ef0f3ec8c017 SHA-1: ed291e9c60e14546185ff1a7e5e8a834243fa0dd SHA-256: 54ccdc1d77ce3852fab770357dfb2488ed46b18ee42712093fcd853b26482c81
134 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is indicative of a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. Although no scripts were extracted, the presence of a malicious URL and the overall PDF structure suggest an attempt to trick the user into navigating to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.com/123?keyword=pitcher+and+basin In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366639/normal_5f8ca73a3a5ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f9167981d6c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378613/normal_5f8b946c02dfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393358/normal_5f951ce48cc36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5f87e12224c02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374021/normal_5f9423118691d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_5f91a344d11a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dudurat/50374563258.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/vepubikanason.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/ankylosing_spondylitis_symptoms.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/80606448277.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/bacterias_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/goroxoleluvumenelokagud.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/47124463728.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/robuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f905b804-0231-4a4e-acf0-eca620e9af14/cosmopolitics_lumiere_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eb91f56-d65c-4293-8335-98beeacfcc24/pome_sur_le_racisme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3351574-9d7c-4e99-bddd-120ed49326f5/2051118880.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b372aaa-3186-4856-9510-2230ac36f746/25690130175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/392fdd73-9774-4c55-b296-1648bb80c794/motorasasesoteguxoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/blue_water_grill_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/que_es_el_centralismo.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/cardiovascular_disease_project.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/21712820724.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off00016f08.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16F08 19056 bytes
SHA-256: 0426913d51a9e6748f3edcc90d650c0267e331fe2235c2bc9843054c6a74c210
font_00_sfnt_off00012742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12742 3120 bytes
SHA-256: 750d1396ea0bf5fbbfb1efa7800930e25a2e400cebbc542b316d66b1e2c172b3
font_01_sfnt_off00013277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13277 4816 bytes
SHA-256: 76af215f1dd410ffa65687f9277f280d04a3d4590a1a04797233dad400090109
font_02_sfnt_off000142b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142B0 13500 bytes
SHA-256: 4fc9d4ecc81a60c65aee9e59d92253879d8f57c3cbbe388cb0bdfc7d10758088
font_04_sfnt_off00018e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E46 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333