Malicious PDF — malware analysis report

Static analysis result for SHA-256 570e982f6d80a672…

MALICIOUS

PDF

87.8 KB Created: 2021-03-05 21:49:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 23327855663058ec3266981dcf4b1ff8 SHA-1: 95510287ed5df422f1bf01d04bdbef5fab3f5837 SHA-256: 570e982f6d80a6724f27806187a770eae4690d9db24e16ce415bc4c5d84e3c24
126 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO spam operation. The primary URL, 'https://botokaw.ru/strik?utm_term=pride+and+prejudice+2005+watch+online+123', suggests a lure to content related to movie streaming. While no scripts were explicitly extracted, the ML classifier strongly flagged this PDF as malicious, and the structure points towards an attempt to drive traffic to potentially malicious or deceptive websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://botokaw.ru/strik?utm_term=pride+and+prejudice+2005+watch+online+123 PDF link annotation
    • https://gumikixinugud.weebly.com/uploads/1/3/4/8/134864359/3249146.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/whirlpool_washing_machine_reset.pdfIn PDF document text
    • http://woxijakuzadajew.getenjoyment.net/tcp_ip_stack_repair_windows_10.pdfIn PDF document text
    • https://kakituku.weebly.com/uploads/1/3/4/5/134589995/7b57db957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473047/normal_60246ebc419b0.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/naxopitakijewebaxenitofe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383791/normal_602eb6acad9e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424996/normal_5fd0877d66549.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422908/normal_5fdd02e315d7d.pdfIn PDF document text
    • https://fobopalok.weebly.com/uploads/1/3/4/4/134401292/606029f75bc.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/kowowitupafokoruguwefaz.pdfIn PDF document text
    • https://minaraxu.weebly.com/uploads/1/3/4/7/134765114/mifabom.pdfIn PDF document text
    • http://fumexijana.getenjoyment.net/14039118520.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/cfb9296a-8485-4f27-9c17-c46255f7a50c/what_does_blue_falcon_mean_in_german.pdfIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_115981d2428349dc957fb865c3df6220.pdf?index=trueIn PDF document text
    • https://4123e755-5e7e-4fb8-b167-49ba90d37259.filesusr.com/ugd/fd3290_9de2d163129b479fbb33d8209d2c143a.pdf?index=trueIn PDF document text
    • https://5053e88e-9e18-4719-890c-32a1cca0295d.filesusr.com/ugd/411503_0f20ce92847f418db0302173be023ede.pdf?index=trueIn PDF document text
    • https://c931c956-7f53-4e4e-96dc-27d7f003ba63.filesusr.com/ugd/b80c10_8fc6f341c4554166bb1a2cedfeb65605.pdf?index=trueIn PDF document text
    • https://52468903-0e2d-47c5-babb-61e1d305d291.filesusr.com/ugd/32777b_c894500d280c4605bb56d2e0a0a67d6b.pdf?index=trueIn PDF document text
    • https://d9226533-59f4-4737-ae77-cfa9cdee5378.filesusr.com/ugd/d7c203_bd95b7e1bcc340ad8ff2fa3c32f200d2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bc125aa-8c1e-4110-b70b-95bec4635c51/41571699184.pdfIn PDF document text
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_9884387d2bfd4fe989ded59dd331ba78.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF2 5768 bytes
SHA-256: 5c6d990e22906eab79fe6e6b5a2be42cebefb709d3f879367aae06a3b6b5e52f
font_01_sfnt_off000112b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B4 12556 bytes
SHA-256: 9688db1a707fcb47ee51d2aac73781c0c36f5e39892305deee7f2f1aa19b1b7d
font_02_sfnt_off00013c28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C28 16148 bytes
SHA-256: f90a9b5ccdcbd677b24fd756d4dbcce44ae553687ad93776545458f22a3c1b74

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