Malicious PDF — malware analysis report

Static analysis result for SHA-256 b968d3df49669511…

MALICIOUS

PDF

74.7 KB Created: 2020-12-31 23:12:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c16ac3474c197a4ff0f8c8387cc0d259 SHA-1: 1e2501b8bc87c803b71bb809bfea16b563509202 SHA-256: b968d3df49669511da70f7bae7871cb66d52e281d3cae6d4d920203060037750
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or SEO link farm. It contains numerous external links, with a critical heuristic identifying a mass external PDF link farm. The document body, though heavily obfuscated, suggests a lure related to 'Spiral buffet manila rates', likely intended to direct users to malicious or spam content.

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 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://traffnew.ru/123?utm_term=spiral+buffet+manila+rates PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452217/normal_5fb45f636248b.pdfIn PDF document text
    • https://zusonugen.weebly.com/uploads/1/3/5/3/135305237/pokoxojukufo.pdfIn PDF document text
    • https://cdn.sqhk.co/kupulifip/fIjgjaT/taxi_driver_2_game_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/xakatikakizi/jeKNwii/puwuzanufegisena.pdfIn PDF document text
    • https://cdn.sqhk.co/zozijawutuxu/ghigdic/winking_lizard_tavern_menu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e083002d-e6cb-4573-8e0b-0ceec1018445/11246298436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/946a9621-16b1-4646-8589-875be6bed770/orc_bride_espanhol.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/tenokazowelagejotu.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/cambridge_igcse_sociology_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/weather_report_today_bhagalpur_bihar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b935267d-63ae-418b-a1be-84c2bcb22f13/le_creuset_teapot_blue.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/nice_guidelines_maintaining_a_healthy_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8ef6596-1308-471c-a763-91be8bef23cb/little_big_snake_videos.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_off0000e960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE960 5292 bytes
SHA-256: e367932b7ec813be3e4552e922b0f7fd0cec355c1d04cb79b33badb98deeac85
font_01_sfnt_off0000fb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB3F 10148 bytes
SHA-256: ccc1e86be2d58c69a19358ee52c5a605e50b04ea2c80b1ed7bf0783f7bc4a7c5

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