Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ecf9968f1050f8…

MALICIOUS

PDF

54.7 KB Created: 2020-10-16 04:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 9dc9ed5746e73e846383508fac83ea87 SHA-1: c6c84f30b4ca30bca997c091dbf0f8b521402e24 SHA-256: 68ecf9968f1050f8314b1ab22154ccf92206e547641fa76767b201d00349982f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, with one specifically identified as pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be a lure for downloading content, further supported by the heuristic identifying it as a link farm on disposable hosting. The primary goal is to redirect users to malicious sites, likely for further exploitation or malware delivery.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=workshop+technology+by+raghuvanshi+pdf+free+download In PDF document text
    • https://site-1042941.mozfiles.com/files/1042941/28947570597.pdfIn PDF document text
    • https://site-1040507.mozfiles.com/files/1040507/saweja.pdfIn PDF document text
    • https://site-1038635.mozfiles.com/files/1038635/wuwawakasatijijebapitikif.pdfIn PDF document text
    • https://site-1040376.mozfiles.com/files/1040376/85079855811.pdfIn PDF document text
    • https://site-1040982.mozfiles.com/files/1040982/zopesagamosemenepefuvem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_5f886ebb71b7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_5f87a9a917830.pdfIn PDF document text
    • https://site-1036730.mozfiles.com/files/1036730/sinilofunenagerusobugiw.pdfIn PDF document text
    • https://site-1037238.mozfiles.com/files/1037238/keguz.pdfIn PDF document text
    • https://site-1040512.mozfiles.com/files/1040512/nidurevofekikax.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/c33f398d-af8d-4c3f-b0ae-9a385fbda49b/rusepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da44271a-aa2e-4631-9de9-4f7e35953de2/xiwupesasuwixinesenix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0659/3696/files/dynast.io_crazy_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3032/files/17319962085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/7451/2806/files/the_black_root_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8394/8718/files/tepoxudefitalis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1229/1264/files/gezilekitik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6b17e8f-3727-43dd-b74f-35058ba9ad35/diwaxeniwosap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a9082ff-8f80-43de-8651-33f34fb9a3cd/karumakopapemogatered.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72969bff-6c5d-49ad-bec8-ec449e643d01/jaxidupunuwelazunobaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c47976d-d327-4c08-8723-def7b0217ca0/rikur.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAA 7608 bytes
SHA-256: 818933d6332f3f92129bf1bbb0539ccd3f213681787ce87f295996596d72c7a1
font_01_sfnt_off000085c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C2 5772 bytes
SHA-256: dc0971740ae623804adc42a364bf114b6e2a0328ec1bb0f475c54a1557048c10
font_02_sfnt_off00009980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9980 10820 bytes
SHA-256: 6d0a653f83914f9545b2cbd135b0dd2f7dcb3ec44aa4a2c5ac95181975acf479
font_03_sfnt_off0000be88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE88 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34