Malicious PDF — malware analysis report

Static analysis result for SHA-256 b90f6d1126d85427…

MALICIOUS

PDF

82.1 KB Created: 2021-03-02 14:57:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 8961e2ba8edf58d2fb35faea8a043569 SHA-1: 14f0b3eb76325e052a5a782cddc925cd61a0de0c SHA-256: b90f6d1126d85427dfc52d145a74054b80769bae095db459d3df8f86aa18829a
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting it functions as a link farm designed to redirect users to potentially harmful content. The embedded document body, though heavily obfuscated, contains text that appears to be a lure related to movies.

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.
  • 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://seumenha.ru/award?keyword=is+when+you+reach+me+a+movie PDF link annotation
    • https://numetoximo.weebly.com/uploads/1/3/4/7/134717633/fewomurokus-vetejogifevomu-josef-pawawoj.pdfIn PDF document text
    • https://razebefalokugex.weebly.com/uploads/1/3/4/8/134895215/suzanisaja-tejovetazexida.pdfIn PDF document text
    • https://mipolapepel.weebly.com/uploads/1/3/4/3/134395859/2321e241d.pdfIn PDF document text
    • https://xijeruwenuvu.weebly.com/uploads/1/3/4/0/134018409/movatiz.pdfIn PDF document text
    • https://sadavofabuloxus.weebly.com/uploads/1/3/5/3/135316226/bafudedunado.pdfIn PDF document text
    • https://bujasosepamus.weebly.com/uploads/1/3/4/6/134626994/7340148.pdfIn PDF document text
    • https://dijavagom.weebly.com/uploads/1/3/5/3/135325372/natonu.pdfIn PDF document text
    • https://wapapoda.weebly.com/uploads/1/3/4/5/134581042/9123573.pdfIn PDF document text
    • http://diluzadumavotux.getenjoyment.net/lejojejatoledijosuperan.pdfIn PDF document text
    • https://tipidaxu.weebly.com/uploads/1/3/0/7/130739537/kokisakalot.pdfIn PDF document text
    • https://gixinizolovuz.weebly.com/uploads/1/3/5/3/135348456/6374563.pdfIn PDF document text
    • http://matanusebatug.22web.org/communication_style_colors_test.pdfIn PDF document text
    • https://porovepo.weebly.com/uploads/1/3/4/5/134527374/22e66172.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bixerexexotepe.rf.gd/all_my_loving_piano_sheet.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/vuwejozizanok.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/7374259544.pdfIn PDF document text
    • http://zazedosipafefu.epizy.com/bible_quiz_fruit_of_the_spirit_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/jenupuwugamoloresul.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_off0001064e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064E 5196 bytes
SHA-256: 6a34b6d2f7b55287956dfb206aaef7c978409a18938ff6a79761fb8bbb9cf52f
font_01_sfnt_off000117e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E8 10276 bytes
SHA-256: c559131406ee176d5e1fd7eb35f34114b64c196cafd18c1dccd0f3efda8821a0

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