Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adabff1691d0709…

MALICIOUS

PDF

73.0 KB Created: 2021-06-06 09:51:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ece385b6a4443f245f94c392b9d190d1 SHA-1: 1187d6b8c31ca35e656bc7bb27e97b052c469951 SHA-256: 8adabff1691d0709b6d691a4d11c82707b038d0111c9a1f5bb395f6e07b5f90c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://pixomot.ru/pbw?utm_term=what+is+horticulture+and+its+scope PDF link annotation
    • https://dapasubasawesol.weebly.com/uploads/1/3/4/3/134383907/5034872.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408713/normal_601b1f2818e2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406166/normal_6033849386798.pdfIn PDF document text
    • https://xepinepuro.weebly.com/uploads/1/3/0/9/130969238/8572237a7.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
    • http://didaneguk.pbworks.com/w/file/fetch/144427851/fanuc_series_ot_parameter_manual_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3af0ea39-15ed-4174-98db-d27b89817887/timekedidamakuranegawik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18ab184c-9d8e-4d7a-a86e-d0a638d66744/posagurulopuzafaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebe7ffa9-a998-4ba5-b352-3aafd9d8cf06/are_rye_crackers_low_gi.pdfIn PDF document text
    • http://tejudafo.pbworks.com/w/file/fetch/144634188/what_is_causal_comparative_research_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e98b2547-06f2-4399-8753-c799e97f712c/what_does_the_hush_button_do_on_a_smoke_alarm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a505f26-8a19-4b83-8f16-c15eb3f77c03/jesamirajokumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6e4f7ab-7878-4394-9b93-5c07f2c75071/17291480268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4b99e41-7e2f-4b33-aa58-93032a943938/57866248270.pdfIn PDF document text
    • http://zosajivapesi.pbworks.com/w/file/fetch/144643653/wubegutomelew.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_off0000d403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD403 5056 bytes
SHA-256: 5f218739261c8afc317e26227384924dca2adacca5caadcfe6731d7f17e22fda
font_01_sfnt_off0000e529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE529 10568 bytes
SHA-256: 55e8bb0d3b4226b73f755ce73ff974e0f7db2680fbb7b987a0c3468a2deaf1f3
font_02_sfnt_off00010923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10923 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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