Malicious PDF — malware analysis report

Static analysis result for SHA-256 acadfd456f92456e…

MALICIOUS

PDF

73.8 KB Created: 2021-02-17 13:11:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 48545aae30c12cfa1320dc36fffbd1d9 SHA-1: 8586e091b2628c50cebb48da73944f700ca1d14b SHA-256: acadfd456f92456e1419e2f3463f8a205c2297c2efbf0a06e0936bf58651b163
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one prominent URL suggesting a lure related to connecting a Honeywell device to Wi-Fi. Heuristics indicate this PDF is part of a link farm on disposable hosting, and ML classifiers and ClamAV strongly flag it as malicious, likely phishing or a trojan. The presence of PDF_URI and ML_NYX_PDF_MALICIOUS firings, along with the suspicious URL, points to a malicious intent to redirect users to a harmful site.

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
  • 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://jottigo.ru/strik?utm_term=how+to+connect+my+honeywell+to+wifi PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4487200/normal_5fec8f4753a86.pdfIn PDF document text
    • https://tumulole.weebly.com/uploads/1/3/6/0/136054957/9a5f4c612106ed1.pdfIn PDF document text
    • https://jerijumewatopod.weebly.com/uploads/1/3/5/3/135330781/2254618.pdfIn PDF document text
    • https://renixopofofof.weebly.com/uploads/1/3/4/4/134486295/pufidazuj-ribekebuboduwul-wufosorotixodav-fozozijuzexu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404515/normal_5ff4c41b52e3f.pdfIn PDF document text
    • https://tovuwofox.weebly.com/uploads/1/3/4/7/134731163/cd44df683.pdfIn PDF document text
    • http://sikagez.22web.org/english_to_tamil_translation_dictionary_app.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/numegubowalonan/41830598032.pdfIn PDF document text
    • http://rafokusavuti.epizy.com/treasurer_s_report_template.pdfIn PDF document text
    • http://zafovitunopejus.epizy.com/61668833162.pdfIn PDF document text
    • http://babokad.epizy.com/bpsc_question_paper_2017_with_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/calisthenics_workout_plan_intermediate.pdfIn PDF document text
    • http://biliwaxakob.rf.gd/downward_arrow_worksheet.pdfIn PDF document text
    • http://sobakijej.rf.gd/49447009516.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_off0000e789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE789 4792 bytes
SHA-256: 0e44fcfb45f6feaa16fca4c51db4e91f6db4f6b1390cbf0b486c4ea0690b638b
font_01_sfnt_off0000f7d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D0 10092 bytes
SHA-256: b90b2a65472cdf55488825119f22d271d91e572d573a2d2627b9e464d2609b6c

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