Malicious PDF — malware analysis report

Static analysis result for SHA-256 8230eb068b5306b8…

MALICIOUS

PDF

98.3 KB Created: 2021-02-15 06:12:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: f7190084fdf2b8372b763d9251e44a2b SHA-1: 76dc563d316e9ff3702c8f3b68343b760df6fa0c SHA-256: 8230eb068b5306b802ff5682ab11ab2b0131eb6c3af0e85c2b33a8be4e92508a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many hosted on disposable domains, indicating a link farm designed to redirect users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to deliver second-stage payloads.

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://druttle.ru/123?utm_term=2002+kawasaki+kx65+owners+manual PDF link annotation
    • http://abistrans.ru/nekekozexujo4lwns.pdfIn PDF document text
    • http://dojisef.iblogger.org/booster_seat_guidelines_nebraska.pdfIn PDF document text
    • https://fumitalabojaluk.weebly.com/uploads/1/3/5/3/135399187/sarapisu.pdfIn PDF document text
    • https://cdn.sqhk.co/wubofuse/Yh8Jhda/68931396506.pdfIn PDF document text
    • https://vinovebavelugis.weebly.com/uploads/1/3/1/3/131383284/721e13d6eb63b40.pdfIn PDF document text
    • http://viwowiziboso.22web.org/compare_fractions_lesson_6._7_answer_key.pdfIn PDF document text
    • https://zikixitifo.weebly.com/uploads/1/3/4/8/134897390/dumogudijozagaloji.pdfIn PDF document text
    • https://cdn.sqhk.co/pofoxubo/hZMMaxM/kopesokapiniwuwe.pdfIn PDF document text
    • http://zoomita.fun/scholastic_success_with_grammar_grade_5_answer_key9va4t.pdfIn PDF document text
    • http://natural-shop.info/gogoxejuzutuxaramu9oov.pdfIn PDF document text
    • https://cdn.sqhk.co/vekudaselux/haThfha/nice_button_down_shirts.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/jeielje/f1_car_races_gta.pdfIn PDF document text
    • http://guromufupadaf.iblogger.org/bumufodemagukev.pdfIn PDF document text
    • http://deemonatrafik.xyz/download_percy_jackson_and_the_battle_of_labyrinth7n1xu.pdfIn PDF document text
    • http://hookup154.online/93362174528upe72.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jekewakus.epizy.com/xofese.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/livro_capitu_e_eu.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/93302591351.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/pefepekanedara.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/9786816566.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012a23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A23 5512 bytes
SHA-256: 178ec64c8c98e44f8add991cfe26e802d79bcf0291200baa8e80fd6acbe907ea
font_01_sfnt_off00013ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CE7 12168 bytes
SHA-256: 6ec81d7257508cafd1740ab3fe9cfd0d2314111e9b1dffa212de5fe23e3b9291
font_02_sfnt_off0001669c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1669C 16148 bytes
SHA-256: ebaa9d42c58e3fd25c8264bcf4ef2319fee467c92cf53dcc1f377a20fc8d39b0

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