Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5a013bd057b63aa…

MALICIOUS

PDF

76.8 KB Created: 2021-04-07 21:15:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 57545c89989e58caee2989923ed269ba SHA-1: e5807a64911fa02581052e92e18b38f85c7b61e0 SHA-256: e5a013bd057b63aa5b0e5e5c82442538a22b2cb87540df430107936e040b17a4
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with several pointing to known malicious redirectors or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a common phishing lure, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=cartoon+guide+to+becoming+a+doctor In PDF document text
    • http://vowujebotoza.mywebcommunity.org/sony_cdp-cx355_repair_manual.pdfIn PDF document text
    • http://eushopvmn.site/duvagukoza463eu.pdfIn PDF document text
    • http://fuvagezilavez.mygamesonline.org/why_does_my_thermostat_go_blank.pdfIn PDF document text
    • http://qwert-ita.fun/compound_probability_independent_events_worksheetcmpz3.pdfIn PDF document text
    • http://brumbum6.xyz/jetizafoxibuxakigufeji7qska.pdfIn PDF document text
    • http://trening-ekaterinodar.ru/sivunajv9cdd.pdfIn PDF document text
    • http://gopagafab.medianewsonline.com/sadizon.pdfIn PDF document text
    • http://on24-system.club/ropilaselijogejeminf29h.pdfIn PDF document text
    • http://worldworkbook.com/lg_120_refresh_rate_tvxstds.pdfIn PDF document text
    • http://nukicew.xyz/sebutkan_4_penulis_mushaf_al_quran_al_karimey31t.pdfIn PDF document text
    • http://cz-nitrof.website/613020485710mih9.pdfIn PDF document text
    • http://nyvelsets.online/nitolenice0fj.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/wezaniv3sos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://modunozig.rf.gd/89626983392.pdfIn PDF document text
    • http://revudipepofaten.myartsonline.com/alto_sax_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/85014566435.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/inversor_fronius_8._2_datasheet.pdfIn PDF document text
    • http://sinejelubomidi.epizy.com/vastu_shastra_book_in_english.pdfIn PDF document text
    • http://mojajigutomikew.rf.gd/channa_mereya_full_movie_hd_480p.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/33098986153.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/dell_latitude_e6410_video_driver_windows_10.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_off0000ee85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE85 5096 bytes
SHA-256: 0056ccbc20ff7c9e07102792ca540c7b2cdb4c2790f49b33eb803bdf2139428b
font_01_sfnt_off0000ffc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC1 10560 bytes
SHA-256: 9a953587b04ac8b17e1ecc4d4def50f6b4bc70e53a2f4f2465a14ccaf492f9a3

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