Malicious PDF — malware analysis report

Static analysis result for SHA-256 9345f6a526eb63cb…

MALICIOUS

PDF

75.8 KB Created: 2021-01-06 04:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e5ac2f7740374bf06a6b5891ee6b20fe SHA-1: 78322148861f7dcb42cd29c294986be0b206bc7c SHA-256: 9345f6a526eb63cbf8b2f7e694d9dfefa89c4cd7c7e22663e2a68e1fb7453a3c
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure and a PDF link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest an attempt to redirect users to potentially harmful sites, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/aws?utm_term=boy+songs+2019 In PDF document text
    • https://sotezogurew.weebly.com/uploads/1/3/2/7/132740991/pijixerijenude-mixixefuz-gutejev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466143/normal_5fe2f7842fbc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471971/normal_5fad2ef962527.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/aefea5f5-66e7-4f51-9a37-486bf13eaed9/constitution_self_test_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d355dd3-db86-421c-803f-76c6ae0b2e6d/laliduzilovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25678372-f0c0-4d9c-bf11-7d695c8ed5ef/60240249610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68174678-181f-46d3-911a-8073c2621abc/45958467001.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/brother_bear_2003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c19b7ae9-0fba-4277-a8d0-dee7f5739815/xusitajejukadujix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d10eefd-453b-4cd9-b9f3-97d46605679c/75458365614.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/beats_x_manual_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/tapir_facts_and_information.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/androidx_vs_android_support_library.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/filixerizitabilavew.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/88344589220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4178f02-5924-42e1-af05-11eb8350fd62/olangal_malayalam_movie_1982_download.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_off0000dfa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA8 4692 bytes
SHA-256: cb1751bfebe53e21077e598640c0be212062e2c076c16713e0a9254a700183c1
font_01_sfnt_off0000ef9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9C 10788 bytes
SHA-256: 633f6f96c7f4cddf136b177e7ba640145991f2dd19cb37e128830348dabcbd71
font_02_sfnt_off00011453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11453 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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