Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d682113ad3746f…

MALICIOUS

PDF

117.1 KB Created: 2021-02-27 19:49:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a7f96913f82a9caa601ef6e13dc173f0 SHA-1: e0466b59657f2a68c1c096fde20647b2b36df41e SHA-256: 49d682113ad3746f45e208ae0d53184b47b14696bf295567e8aff2fe7569700a
126 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many pointing to disposable domains and 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 links are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/strik?utm_term=forgotten+realms+wiki+drow+houses PDF link annotation
    • https://fexaxotira.weebly.com/uploads/1/3/5/4/135401388/3355781.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/jhbihjo/pixel_force_2_mod_apk_revdl.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/64634418270.pdfIn PDF document text
    • http://idealica-italiaoficial.site/84378885980sqllh.pdfIn PDF document text
    • https://cdn.sqhk.co/nipigagavadu/UOgdjbH/popular_ice_cream_shop_dessert.pdfIn PDF document text
    • http://tuwukadinem.mygamesonline.org/is_a_dame_the_same_as_a_lady.pdfIn PDF document text
    • https://pamaxorakumi.weebly.com/uploads/1/3/4/0/134019068/manerinedikabaw_jebowijax_narezulos_tajeperaba.pdfIn PDF document text
    • https://cdn.sqhk.co/vikimono/g7nL2uG/bellbird_valley_farm_nuova_zelanda.pdfIn PDF document text
    • http://kakolamilasaru.medianewsonline.com/how_to_use_a_rosary_chaplet.pdfIn PDF document text
    • https://geguwuwivoloko.weebly.com/uploads/1/3/1/6/131636947/71b320.pdfIn PDF document text
    • http://rijewomel.scienceontheweb.net/sports_nutrition_jobs_near_me.pdfIn PDF document text
    • https://sabiwivilo.weebly.com/uploads/1/3/4/3/134316676/waduzalid.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/me_before_you_full_movie_with_english_subtitles_free_download.pdfIn PDF document text
    • http://lnstagramverifiedbadgeservice.com/who_made_cheese_curdsp1loe.pdfIn PDF document text
    • http://ses-paypal.com/bugatti_la_voiture_noire_hd_wallpaperf5yfu.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/haFJjfb/dogipivifisunefobopozef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vanatul/kexupolalidikosatix.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/11309916913.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17F80 5232 bytes
SHA-256: b0312816a61692121d0c597a8c5e50d9cf1808fffabf766e28b9fb2b9ba6856b
font_01_sfnt_off0001912a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1912A 12520 bytes
SHA-256: 1308e70d3f5edf99a39434dc82406eb452b2d327be7aba9dba461ae48bfaefed
font_02_sfnt_off0001b8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B8F2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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