Malicious PDF — malware analysis report

Static analysis result for SHA-256 b167b35a9807e3ea…

MALICIOUS

PDF

39.4 KB Created: 2020-10-12 00:28:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 43c6667086f6d0b5f98d7904ead60e8d SHA-1: 731b46701e7975d8368ddbac080ccf69bbd78312 SHA-256: b167b35a9807e3ea553ff539ba997f51d997f945fac5be948a29e4aac57c529c
94 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/pify?keyword=area+of+polygons+worksheet+answers+with+work'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The ML classifier also strongly flagged this PDF as malicious. The file is likely a lure to trick users into visiting a malicious site.

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/pify?keyword=area+of+polygons+worksheet+answers+with+work In PDF document text
    • https://site-1037166.mozfiles.com/files/1037166/boratanobom.pdfIn PDF document text
    • https://site-1048194.mozfiles.com/files/1048194/63287691100.pdfIn PDF document text
    • https://site-1038867.mozfiles.com/files/1038867/45130504030.pdfIn PDF document text
    • https://site-1040289.mozfiles.com/files/1040289/xogibedojowuxemaxa.pdfIn PDF document text
    • https://site-1040244.mozfiles.com/files/1040244/40376509389.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7d019d3-ca83-4f37-ab57-2d82427b1c86/23593043034.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb88854b-b893-4c95-be38-451b37f36c4c/46083991252.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88a96a96-579a-418e-b4d9-d70dab8456bc/mekawegesaworis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a07ac71-fc6a-4e1a-b11c-345d000c2f7d/58831943277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5732bcc7-3a71-4f44-885e-93fcf30ae4da/49167936708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f74829-a468-44ff-8895-2808ea0d92d3/13041806228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59a973a1-eae8-4909-990e-f38c9c927d19/83280313637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9383de0e-7f14-4f9a-8207-75b62889714b/21677276846.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4729bbe7-20f1-4260-ace1-5e8e68562bd6/29181351010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ba25088-fa13-42b1-b3f6-825747650243/migutudivesoxetupazaj.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_off00005adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADB 5408 bytes
SHA-256: 4979465d0d2880e777788cf668a35a7b29c9a81423e7594b5a31572f0fe17245
font_01_sfnt_off00006d5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5B 10316 bytes
SHA-256: 8219f84ca56e730b1bc7e2f1dabce538d1d888dd70a8fe1edce8f62c42ba02da

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