Malicious PDF — malware analysis report

Static analysis result for SHA-256 32111aa0a3535d9b…

MALICIOUS

PDF

39.4 KB Created: 2020-10-31 06:57:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 00be43ce3662ac719c8975ec2c62ab2a SHA-1: d2f8a7c1c791455c5ae347330eca497349801cfa SHA-256: 32111aa0a3535d9ba521ac3f4a7add0fcc5492961e32b01f798cb72080b9e488
184 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, identified as a link farm designed to redirect users to potentially malicious websites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to 'gettraff.ru', indicating a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches one of the embedded links, suggesting an attempt to disguise the malicious nature. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/aws?keyword=reaching+for+personal+freedom+ebook In PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/805149.pdfIn PDF document text
    • https://fulojozizarotuv.weebly.com/uploads/1/3/4/3/134318677/ca8b86f790312b.pdfIn PDF document text
    • https://lokugejepotag.weebly.com/uploads/1/3/4/3/134318746/a6428a4a.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/bovomakatowatemixoko.pdfIn PDF document text
    • https://galuxenezinex.weebly.com/uploads/1/3/4/4/134437763/637ca92c9b39123.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/67c697453af0.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://cdn.shopify.com/s/files/1/0498/6221/3789/files/33703120700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6542/5063/files/darkest_dungeon_old_tree.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92eec54e-a75b-4f1f-9b07-8f6f8d3a38fc/metro_exodus_caspian_good_ending.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7a10182-504b-4830-9ca8-2558e188a9b5/buvadif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8052/2138/files/equilibrium_constant_partial_pressure_units.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2a09fe9-ad5c-404f-a925-70b6ee83ab76/somogolofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aa7d053-7362-4c37-a99a-63adeac4c7f9/fifabupezozosomikosur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e1c0d52-8655-4f0b-b622-bde39d155d93/jarenuvamuloj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D0A 5488 bytes
SHA-256: 880afeaac84432098913ef5923f19f1480e5931d6e4c463f9bde68de3000b43b
font_01_sfnt_off00005f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F75 10448 bytes
SHA-256: 23c3bf2244065c90501c0aaa285bfa6947efa545a29bfae9bb85cf9dcea7c6be
font_02_sfnt_off000082c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C2 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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