Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8014e287c8e4ee…

MALICIOUS

PDF

73.2 KB Created: 2021-03-04 06:27:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c2d916d43e8db5226e6636e5a0087e0d SHA-1: ad946c4aa444bb064ae135b2609bf57958a92d94 SHA-256: 4b8014e287c8e4eeec55c135f311fca937858ddd5a0999ef8e50bd0575256280
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/award?keyword=total+gym+xls+workouts+pdf PDF link annotation
    • http://dodemul.mygamesonline.org/the_jazz_real_book_sax_-_eb.pdf.pdfIn PDF document text
    • https://vujuzujotug.weebly.com/uploads/1/3/4/4/134478410/36105f94.pdfIn PDF document text
    • https://cdn.sqhk.co/rapekerokemo/jdRhid4/xizudafemapa.pdfIn PDF document text
    • https://cdn.sqhk.co/difanemifal/jgQiqia/67395724293.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/jcYkjbJ/84214319095.pdfIn PDF document text
    • https://cdn.sqhk.co/ravusigi/dhjghii/100_best_soul_songs_of_the_70s.pdfIn PDF document text
    • https://wejatinolu.weebly.com/uploads/1/3/1/4/131438249/5607194.pdfIn PDF document text
    • https://cdn.sqhk.co/juwafajem/jgEhdig/mini_golf_open_near_me.pdfIn PDF document text
    • https://jixusalozexifan.weebly.com/uploads/1/3/1/4/131407855/e822664040e.pdfIn PDF document text
    • https://xexijezukivox.weebly.com/uploads/1/3/0/8/130874296/nogezofazebexizaj.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/jeqUQjb/30896133137.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/leteraxewe/dosegowerigoziv.pdfIn PDF document text
    • http://depevabevidot.rf.gd/resignation_acceptance_letter_uk_template.pdfIn PDF document text
    • http://nobitinajed.epizy.com/how_do_you_imitate_god.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/44241140537.pdfIn PDF document text
    • http://falogivaxaf.epizy.com/70746293999.pdfIn PDF document text
    • http://mawidinivetobi.myartsonline.com/mekonevosi.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_off0000e0ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EC 5636 bytes
SHA-256: 4224338f64196ffe4bfcf75991916e9a7f122c4e4f4664e3f43c0d879570cccf
font_01_sfnt_off0000f424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF424 10476 bytes
SHA-256: cde3fad48dfe8eab9388967840428e56d4389de05404c0995dbd7dfc97612cd8