Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9d6060c98501fa…

MALICIOUS

PDF

81.2 KB Created: 2021-03-14 20:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 596fd4a1da8c065a0f2b839b21eda1dd SHA-1: 55ca0a6ae2eef1eb3eb5d4ef0e7215b43c39e848 SHA-256: 8f9d6060c98501faff7165fc49f9bd9db8f66bf49b984ea9a358cfc018e7ff71
134 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/123?utm_term=free+printable+high+heel+shoe+template PDF link annotation
    • http://help-mediasupport.com/beats_by_dr._dre_-_solo_pro_more_matte_collection_wirelessotgy6.pdfIn PDF document text
    • http://tawilexupo.iblogger.org/73227235615.pdfIn PDF document text
    • http://andyhong.blog/12029124560zjjcf.pdfIn PDF document text
    • http://1xbets-reg.site/bayonet_charge_poem_analysisbo1e7.pdfIn PDF document text
    • http://pifanaliriwabo.mygamesonline.org/law_dictionary_english_to_gujarati.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/30039107829.pdfIn PDF document text
    • https://cdn.sqhk.co/gizukakom/gGhc99A/31663016197.pdfIn PDF document text
    • http://cryogen.me/a-_100_basic_aviation_safety_answerspcxgi.pdfIn PDF document text
    • https://cdn.sqhk.co/nexoratuxi/5iijfhf/givurubu.pdfIn PDF document text
    • https://doxemikawapuki.weebly.com/uploads/1/3/4/3/134314999/6742fe0c51f96c9.pdfIn PDF document text
    • https://turugoduzo.weebly.com/uploads/1/3/0/7/130739986/2850863.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/btjb0hg/wivazezetifejada.pdfIn PDF document text
    • https://cdn.sqhk.co/fotenulutis/cwhiHxT/sozunadupijak.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/JLjghhR/85515865246.pdfIn PDF document text
    • http://mmamba.ru/adobe_application_manager_mac_freeg0uw5.pdfIn PDF document text
    • https://luvinazomefad.weebly.com/uploads/1/3/4/3/134308035/006a0523d7b808.pdfIn PDF document text
    • https://xijafidul.weebly.com/uploads/1/3/2/3/132303061/serakobuzas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guminol.epizy.com/informatica_intelligent_cloud_services_tutorial.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/what_are_contemporary_issues_in_psychology.pdfIn PDF document text
    • http://mojadifo.rf.gd/what_does_keloid_formation_mean.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/89247615684.pdfIn PDF document text
    • http://ginudamaxed.epizy.com/jigebugoxugaxewupisa.pdfIn PDF document text
    • http://fozikabev.epizy.com/gebokifuwuwetafolonujeris.pdfIn PDF document text
    • http://zepizevut.atwebpages.com/purple_is_my_favorite_color_meme.pdfIn PDF document text
    • http://pigosoj.epizy.com/whatsapp_status_song_punjabi.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_off00010036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10036 5328 bytes
SHA-256: 7707c65b23a95b4fe78f3114ddc440ada75228450432223f45aa3e7cffd550e8
font_01_sfnt_off00011226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11226 10828 bytes
SHA-256: 9622ee5343175289332cb99dcca5a2a4b4cbe798dddfbbe0ad04505baa65f40f

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