Malicious PDF — malware analysis report

Static analysis result for SHA-256 957e3a57a8959180…

MALICIOUS

PDF

41.5 KB Created: 2020-10-11 18:27:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 238b728160386caf4bbcb8db25ff2508 SHA-1: f9780317073cc5c417cdaa8e33951b05a3e185e3 SHA-256: 957e3a57a8959180fd4b88704459baa2fd8e02d07606d0c95215a457b2a5c7bc
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm designed to manipulate search engine results. One prominent URL, https://ttraff.club/pify?keyword=craftsman+trestle+table+plans, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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=craftsman+trestle+table+plans In PDF document text
    • https://site-1039570.mozfiles.com/files/1039570/20786499945.pdfIn PDF document text
    • https://site-1040563.mozfiles.com/files/1040563/31349591443.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/c197b9f8-87a1-4914-b734-62298b95ad04/24204640899.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f013729c-ffb6-48bc-b877-51cb8e42c1cb/wukafusam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20c85362-7caa-4147-9c41-17323d5ab25f/45274292461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2658/0124/files/zadesadisetopekilulib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/26141377115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/hacked_movie_2020_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9474/8573/files/vizsla_for_sale_texas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/737ef5a3-0e05-4403-8a29-bcfa211cc6b2/wemezanusidutizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3f39dc2-295d-4509-a1b8-bbfd3a279d3a/45021374554.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_off000062e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E9 5092 bytes
SHA-256: 9e9834a8a3062bed8b5e46dd7878684f89dac9c3c9e5eb8196480b5bd5a4ea13
font_01_sfnt_off00007413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7413 10428 bytes
SHA-256: 06a699eadfdeeabe721fb2421331690179ba44aab034138700a116783cb9e464

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