Malicious PDF — malware analysis report

Static analysis result for SHA-256 eadddb1f6b96aa01…

MALICIOUS

PDF

43.4 KB Created: 2020-11-03 03:27:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 95e40b41ce64234999389f3f90d0c7b9 SHA-1: 79bdebdba786bddc17eae20daf5d0c5e724cdd7c SHA-256: eadddb1f6b96aa01d6df0a3e3b9472bbabd2c419ce8e7baf9d625c43036d81f5
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/123?keyword=elm+creek+nebraska+pilot'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the redirector link strongly suggest an attempt to lure the user to a malicious 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.club/123?keyword=elm+creek+nebraska+pilot In PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/lutata.pdfIn PDF document text
    • https://kotesolowineb.weebly.com/uploads/1/3/4/4/134448376/6672257.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/c540a9d0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389570/normal_5f962fb8a3ecc.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://uploads.strikinglycdn.com/files/8b858ea7-288f-465d-9abf-26e5e8c0573e/6103002947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f10f3a25-2d9b-4826-a32e-be631caaf651/what_is_rap_duty_in_the_navy.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/sample_business_plan_for_online_store.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72ad8dec-b039-4f7e-b2bd-45629ba76b7a/32134933302.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/gunaduvagago.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/vodafone_annual_report_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/921b3369-cdae-440a-93e7-8c0e840b7b17/12189860115.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/kivuworizi.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/ginutigojezikigoberudab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A73 5028 bytes
SHA-256: 9dba66eeb000feeb79bc7cf4ebeed760fa27d394cd0a95c277efa03c4dffb930
font_01_sfnt_off00006b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5F 11392 bytes
SHA-256: 94be09102a65bcd4f7f355c545b6c2be416b7bf251ebfd721acb65bab40ea56b
font_02_sfnt_off0000924d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x924D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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