Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc21eac666ad1f7…

MALICIOUS

PDF

36.0 KB Created: 2020-10-29 16:39:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 093a7c10987239436c4fc82a55badd33 SHA-1: 1d0a3d1fcecb3ba5f0cd75fc2f5f8c02d3511078 SHA-256: 0bc21eac666ad1f71e55f8d6eb1761578368e44a9f6b588a2af304a25e2711be
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, https://ttraff.cc/123?keyword=comeaux+high+school+lafayette+louisiana, is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the malicious URL strongly suggest an attempt to lure the user to a harmful site, likely for phishing or to download a secondary payload.

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/123?keyword=comeaux+high+school+lafayette+louisiana In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/58698624303.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/rental_agreement_in_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/vefewumat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2792/8520/files/trivia_unplugged_stevens_point.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc7d886a-e460-40a9-9b54-b6fc4e15ce2f/rotovujof.pdfIn PDF document text
    • https://s3.amazonaws.com/bodepova/tuberaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/36647153869.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/xovibuvomoxejawosuzifive.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/induced_drag_and_parasite_drag.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_off00004ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CCB 5272 bytes
SHA-256: 2132b857bd77fe2bea0bef3a7f912994315bed32f22e6e1f126b2737612adc1e
font_01_sfnt_off00005ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA8 10984 bytes
SHA-256: e7d289d04a5832aad3d51995d62e0daf1d03015d2bd52ae852f6270fc28dd8dc

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