Malicious PDF — malware analysis report

Static analysis result for SHA-256 151cea496a05defd…

MALICIOUS

PDF

91.0 KB Created: 2021-01-25 22:14:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 14b36a80c3dca98e8770a7f41a90d10e SHA-1: 8bfb7191d60dd1e59f7c4dd357daf287d567d717 SHA-256: 151cea496a05defd625602ed80ef119a6c9a10fdae2cd68b7404239cd7bf85c2
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. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://trafffe.ru/aws?utm_term=annexure+a+self+declaration+pdf+marathi PDF link annotation
    • https://cdn.sqhk.co/nebuwaxisiw/Ejciehi/20298207067.pdfIn PDF document text
    • https://cdn.sqhk.co/lanasido/jdSzeji/32009423277.pdfIn PDF document text
    • http://medway24.com/schema_electrique_moteur_asynchrone_monophase1ne17.pdfIn PDF document text
    • http://top-salez.site/red_balloon_song_homebhmmb.pdfIn PDF document text
    • https://cdn.sqhk.co/jilebodetifa/jeQXibE/video_maker_free_download_for_windows.pdfIn PDF document text
    • http://xozivupanivos.22web.org/26911637748.pdfIn PDF document text
    • http://gravkamen.ru/towanexezogoxixufenotogonlupcl.pdfIn PDF document text
    • https://cdn.sqhk.co/rajemaramiw/hQgc9gi/tiktok_fans_and_likes_booster.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/hdaXFrt/pilot_mountain_middle_school_supply_list_2019.pdfIn PDF document text
    • http://br1.red/57973152048y7eg3.pdfIn PDF document text
    • https://cdn.sqhk.co/lokutibu/phbDjiS/superior_tactics_rts_unlimited_money_apk.pdfIn PDF document text
    • http://shtampshop.ru/defender_3_hack_apk9tvc1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/84398105306.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/javaxofupisaxikufegexuvo.pdfIn PDF document text
    • http://momugegunimex.rf.gd/24218278693.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B9 5452 bytes
SHA-256: 69271b4e5028891e86d1666bf7a5dd9eb6f9a2526563e50a08a452510d34649f
font_01_sfnt_off0000f91e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91E 3720 bytes
SHA-256: a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9
font_02_sfnt_off0001047d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047D 9972 bytes
SHA-256: 66846541a9620e5955dd15531d7d2d21993f80f76cf871ed6f7c06dc5c8a7898
font_03_sfnt_off000126dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126DD 16172 bytes
SHA-256: fb36930b6158726aadc5cec8e2937717261789c1ed468292f33a1ffb1951f124
font_04_sfnt_off00013c32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C32 10580 bytes
SHA-256: 8fa92722fa31291a003e71fda50eb49d144a0d8d8477ffcaa779c08087d1fe78

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