Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0e3eb18cb7652a9…

MALICIOUS

PDF

88.6 KB Created: 2021-02-21 08:01:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b6dab56a26a04a41ceaf07800a9619df SHA-1: 565354ba9294a6d3e94dc24f05a585bc6ca27856 SHA-256: c0e3eb18cb7652a99690bc116a7215bcf54056f878cfe04a6c227fad9b66b080
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of external URIs, particularly one pointing to a keyword related to cracked software, suggests a lure for users to visit a potentially malicious website. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jacksth.ru/wix?keyword=go+weather+ex+premium+apk+cracked PDF link annotation
    • https://lokevevivepino.weebly.com/uploads/1/3/4/1/134131736/repuwosu.pdfIn PDF document text
    • http://kompledom.com/california_common_core_standards_second_grade_social_studiesea2ya.pdfIn PDF document text
    • https://cdn.sqhk.co/repipedifavi/ibKYjco/holy_city_of_islam_crossword_clue.pdfIn PDF document text
    • http://goldstein.berlin/6973615521cs9yc.pdfIn PDF document text
    • http://vidclips.design/lamexezez0cf6a.pdfIn PDF document text
    • http://instacopyrighthelpteam.com/super_bikes_riding_challenge_pc_downloadgz6cp.pdfIn PDF document text
    • http://tb-films.ru/cervical_traction_exerciseso8clb.pdfIn PDF document text
    • http://tixshopclub.space/17442762936juuie.pdfIn PDF document text
    • https://lowunidedalovel.weebly.com/uploads/1/3/1/3/131380213/7312076.pdfIn PDF document text
    • http://luvetikemo.66ghz.com/unikey_danh_cho_win_8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://kikodanaso.epizy.com/how_to_repair_diesel_engine.pdfIn PDF document text
    • http://widafasamuj.epizy.com/algodoo_2._0._1.pdfIn PDF document text
    • http://gojemivul.epizy.com/imo_guidelines_enclosed_space_entry.pdfIn PDF document text
    • http://fetalinato.epizy.com/uc_browser_mini_free_apk.pdfIn PDF document text
    • http://leporib.epizy.com/1952778877.pdfIn PDF document text
    • http://vezexosewomex.epizy.com/battery_charger_circuit_using_scr_report.pdfIn PDF document text
    • http://jitemawuvefogox.epizy.com/agathiyar_movie_video_songs.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00012a0c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12A0C 18604 bytes
SHA-256: f3c077403604bf237733a4fa0643b3abc67130af8983c65d122cce32ff946062
font_00_sfnt_off0000d145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD145 4812 bytes
SHA-256: adec5b4048c943e1912ca469c1e63f5d15982a9890f4a483ed4fe6fc50f3c918
font_01_sfnt_off0000e251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE251 5360 bytes
SHA-256: e87dfee22b04c7f10ace6c9d32b08e6d92d740ae21ca17b06286c75d8d6e40b8
font_02_sfnt_off0000f46d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46D 6148 bytes
SHA-256: 488ffee5e9c33bcc1f3f00aec749f35977d0cdd209ffadaee35194d66ecc177d
font_03_sfnt_off0001044d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1044D 11252 bytes
SHA-256: ce340f7658392cb122fdcdd60f2992f06a5f1b4ee0684615c88c88ef2b9f044c
font_05_sfnt_off00014819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14819 2832 bytes
SHA-256: d7a1248cabf161ff78a072bd924b98f1b4e551660f4e151c9433689786990c0c