Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a7705c13ae668b…

MALICIOUS

PDF

83.5 KB Created: 2021-03-29 18:45:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 7c8d75801d672e506d6db7fde116d222 SHA-1: 57c92408e05f6c5596c5b1b352cf479ca321adb8 SHA-256: 14a7705c13ae668bdc90ca58a0d93ec955271d616689d7d0719e0fd9dbc6285e
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are associated with link farms, 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 URIs are indicative of a common phishing lure, likely attempting to trick users into downloading further malicious content or providing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://resalured.ru/123?utm_term=filezilla+portable+windows+xp PDF link annotation
    • http://service-hire.com/birijanisori6m8pm.pdfIn PDF document text
    • http://newsportstechnology.ru/bojiloby0s3.pdfIn PDF document text
    • http://grigolia-studio.ru/adobe_maker_missingpdqqa.pdfIn PDF document text
    • http://lasns.fun/44045846436dy14d.pdfIn PDF document text
    • http://trenketo.buzz/814900290965qfad.pdfIn PDF document text
    • https://goluluvofa.weebly.com/uploads/1/3/2/7/132712214/dujugegiv.pdfIn PDF document text
    • http://gogotmif.space/what_is_the_difference_between_metro_2033_and_redux7064y.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/95a0d1770883986.pdfIn PDF document text
    • http://mrshadow.net/bixazeleruwerapulazumousdql.pdfIn PDF document text
    • http://servempieza.site/mosadurigku8nw.pdfIn PDF document text
    • http://jarisudowapebi.sportsontheweb.net/58457909211.pdfIn PDF document text
    • https://xazefobilizap.weebly.com/uploads/1/3/1/3/131384081/1661632.pdfIn PDF document text
    • http://trixy-matrix.space/80369760473nnpry.pdfIn PDF document text
    • http://lulilafemavivog.mygamesonline.org/being_there.pdfIn PDF document text
    • http://1xbet-football.fun/what_do_you_call_a_very_energetic_persontno5f.pdfIn PDF document text
    • http://sluzhba1.net/sivapuranam_lyrics_in_tamil_and_englishc2g4r.pdfIn PDF document text
    • http://shoop-fo.ru/79069600127oluyk.pdfIn PDF document text
    • http://steblin.pro/john_deere_x320_snow_blower_for_salealfgg.pdfIn PDF document text
    • http://healthit.space/61939022095txsms.pdfIn PDF document text
    • http://vavexefane.mypressonline.com/hernia_diafragmatica_em_gatos.pdfIn PDF document text
    • https://balesiloruj.weebly.com/uploads/1/3/4/6/134671801/4386779.pdfIn PDF document text
    • http://nukels.xyz/pirates_of_silicon_valley_720p_downl0gdj5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lofilujajobefi.rf.gd/lurixelujomanefu.pdfIn PDF document text
    • http://mosebokolerer.epizy.com/biodata_format_for_marriage_free_download_online.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_off0000e746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE746 5260 bytes
SHA-256: 85efcb246eb424477cbefb0c916f6652c6b5b0b46ebb95c3eb0720d0a677ec82
font_01_sfnt_off0000f94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 18448 bytes
SHA-256: c7f65bcbf0a6ec785600765eb3dc006663d393ea70f03b35390510c995eecd25
font_02_sfnt_off00012741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12741 16632 bytes
SHA-256: bfa32af85ed9733e9d329932c5444ef017f43cd1cf31216f18da05059aa2c43f

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