Malicious PDF — malware analysis report

Static analysis result for SHA-256 a802bb9de2a171ce…

MALICIOUS

PDF

42.1 KB Created: 2020-10-05 15:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c8568a4f70e52816c2130bbaf3b9c666 SHA-1: f17705c8d2f16a2e95145938f34644d752520a64 SHA-256: a802bb9de2a171cedff4db93b24ae5a2ddd61b9f21637a9b92668166d20b83e1
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://gettraff.ru/strik?keyword=dc%252Fac+fundamentals+floyd+pdf'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary purpose is to lure the user to this external resource. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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://gettraff.ru/strik?keyword=dc%252Fac+fundamentals+floyd+pdf In PDF document text
    • https://site-1039923.mozfiles.com/files/1039923/rewofolojipoxekof.pdfIn PDF document text
    • http://lulawu.theboyfromnewyorkcity.com/uploads/1/3/2/6/132682735/suvenisunibel.pdfIn PDF document text
    • http://files.elizabethmackie.com/uploads/1/3/0/8/130813521/rezebusorurigub_wumovokiwij_jareva.pdfIn PDF document text
    • http://dupifuleb.studiogroovefitness.com/uploads/1/3/0/7/130739431/07f25.pdfIn PDF document text
    • http://files.catrinatenganartistry.com/uploads/1/3/0/7/130738696/cbbab214db61.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/1/0481/3340/6871/files/cadd_prizm_vip_pump_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9304/1059/files/sniper_3d_cheats_pvp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/nexakumabijazomoreluxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0999/4662/files/lafabuwoveki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d3d173e-cf9f-4bae-9c21-32602aa7b344/98822573398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ad02926-7733-4702-a408-bf1066cef10b/59027491541.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b50e1c7-c9c6-4dce-8a01-ea732f86e699/rebox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca83f714-7666-40aa-ab23-fa01d09badcd/dakimive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2395cae8-dbac-49fd-8560-073cbb52235a/69100822243.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_off000065d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D3 5344 bytes
SHA-256: e449bc684fcbd526a5ffcb326efa3e7547f330ca68af7c66f61863c2c4f75435
font_01_sfnt_off00007812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7812 10492 bytes
SHA-256: 83821cbab7afacd7716c82cedb42059eb6465dea41b576251ea35a54101fe135

Open this report in the interactive analyzer, or submit your own file for analysis.