Malicious PDF — malware analysis report

Static analysis result for SHA-256 6989fda75b087bc5…

MALICIOUS

PDF

85.4 KB Created: 2021-05-18 15:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 09c062afca591c27a501348fd8f2f1d9 SHA-1: 4941f20e7aec648f0cfeee6e4e9797acea896fc9 SHA-256: 6989fda75b087bc5517acbfd95a6f02bd9b016c4c9a4d08460d7c70dd9c1a7aa
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which are to PDF files, suggesting a link farm or a method to host further malicious content. One of the embedded URLs, 'https://golowaki.ru/strik?utm_term=sonic+boll+1.9+download+gamejolt', is likely a lure for downloading a payload. The presence of a 'download button' heuristic further supports this phishing-like lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://golowaki.ru/strik?utm_term=sonic+boll+1.9+download+gamejolt PDF link annotation
    • https://dutariviwasupor.weebly.com/uploads/1/3/4/6/134610277/43d7a2145e624a.pdfIn PDF document text
    • https://gikapizuwixa.weebly.com/uploads/1/3/4/0/134097763/4db41e5b.pdfIn PDF document text
    • https://betedodokadez.weebly.com/uploads/1/3/4/8/134882186/8737238.pdfIn PDF document text
    • https://xasufedi.weebly.com/uploads/1/3/4/6/134683860/fapiluz.pdfIn PDF document text
    • https://lafevisok.weebly.com/uploads/1/3/2/6/132683062/ceea7df.pdfIn PDF document text
    • https://viwejidem.weebly.com/uploads/1/3/1/4/131406222/renaxixos.pdfIn PDF document text
    • https://wifevotus.weebly.com/uploads/1/3/4/8/134897576/207936ab8d.pdfIn PDF document text
    • https://wezawemexa.weebly.com/uploads/1/3/1/4/131410399/8043513.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/somisilegex/simple_and_compound_sentences_worksheet_grade_7.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/11400625464.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/49896976021.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/9519823262.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/batman_day_2020_comicsbox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b832dd9-91af-4312-a9d2-24c3871b28c1/vixilolivadoxonuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4c89f29-b29e-4557-ac98-e50c8e4ae277/5273730001.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/manual_caldera_peisa_duo_f_error_5.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/61516666617.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/75404100776.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10955 5636 bytes
SHA-256: 0a5784f26ba1842295fc1a62296657183ebef737eca881314b6ff18e28fb06e8
font_01_sfnt_off00011c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C92 13456 bytes
SHA-256: 242d846f79c0452207dace6aa3d993faae0cb776bf08a631896094a7f0d8b183

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