Malicious PDF — malware analysis report

Static analysis result for SHA-256 2142f118e135a535…

MALICIOUS

PDF

57.4 KB Created: 2020-10-22 13:02:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ead83d53df8929a12bbe437ed3e52fee SHA-1: 48ff5bc3bf631dd776d4b54fe4ee736277c57184 SHA-256: 2142f118e135a535bf9a3b0e1d3d6455626538d7088a45b683a20a5975476132
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.link, which is disguised as educational content. The document body, though heavily obfuscated, contains the URL and appears to be a lure for educational material. The presence of a link farm heuristic further suggests a malicious intent to drive traffic to potentially harmful sites.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/123?keyword=cbse+class+12+chemistry+notes+mycbseguide
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/3209526.pdf
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/wumiwoje-tiname-gawapavovokades-diwasilejokiw.pdf
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/1330473.pdf
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/539342c902.pdf
    • https://cdn-cms.f-static.net/uploads/4369922/normal_5f8f404e2c29f.pdf
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f89d0bec2038.pdf
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f87049a2d317.pdf
    • https://cdn-cms.f-static.net/uploads/4372753/normal_5f8a0a2527490.pdf
    • https://cdn-cms.f-static.net/uploads/4379616/normal_5f8b1427e4d50.pdf
    • https://pirovosarelivo.weebly.com/uploads/1/3/1/4/131406751/c3c753ffb92be5.pdf
    • https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/255749d778c8.pdf
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/laresisif_kigadebokenub_bajutinerid.pdf
    • https://uploads.strikinglycdn.com/files/cb6c26a9-3fc2-4ae7-b8ea-30e294a93800/jufupogokomesisejawasege.pdf
    • https://uploads.strikinglycdn.com/files/2b193334-565b-4e3e-8f2f-23510ab306bf/korukovanan.pdf
    • https://uploads.strikinglycdn.com/files/99fb9554-dc65-4d40-b880-0d3a7b64e7fa/9435190653.pdf
    • https://uploads.strikinglycdn.com/files/97d3a9fc-3c85-46fe-8baf-fe75eb3294d3/xatubikupazikanovuge.pdf
    • https://uploads.strikinglycdn.com/files/411fa016-a840-4daf-b202-c6d0360504ed/32381019952.pdf
    • https://uploads.strikinglycdn.com/files/d6820075-3aa0-4819-aa28-4f7fc97a9c6b/6th_grade_reading_comprehension_test.pdf
    • https://uploads.strikinglycdn.com/files/81678bb5-ab0c-4249-82a5-73ce459ab73e/bobesam.pdf
    • https://uploads.strikinglycdn.com/files/98b36ced-c520-48f1-b591-4844cdb82792/.pdf
    • https://uploads.strikinglycdn.com/files/855e1790-7aa9-4f69-92df-d8b7f2e628ed/63655579771.pdf
    • https://uploads.strikinglycdn.com/files/3033b980-89b9-4aac-8840-f0805cc3490e/nupalon.pdf
    • https://uploads.strikinglycdn.com/files/1d06be3e-6a6d-450c-9c58-533ccec7e29b/tugeserawokupepajapa.pdf
    • https://uploads.strikinglycdn.com/files/357f0099-18ff-4f36-9728-47f2ca3686c8/60640289878.pdf
    • https://uploads.strikinglycdn.com/files/811ca0fd-e061-487a-8bc4-109bacf8426a/vaduxopikazedejadanuto.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008622.bin
7864f3418ac29f8d60d0e3743757b73107e9eeda4d221949708ed72c8dca06ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x8622 5684 bytes
font_01_sfnt_off0000994c.bin
cb9dd8633c02f9a7726953e91bba4c8b77a675a9b28c92f9377c2027011fcc50
pdf-font-stream PDF embedded font (sfnt) at offset 0x994C 10580 bytes
font_02_sfnt_off0000bd65.bin
3b6c6b7b0e41a9e119de80666e1fa34b16946ff3ab7ebe92278ee757248de7c1
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD65 17484 bytes