Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9a63eb38d34653…

MALICIOUS

PDF

88.2 KB Created: 2021-03-17 21:48:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 196805e577dfb35df1d8e93557222bf9 SHA-1: 36e1a19d552510ced6d149ccf7e6272d9bdb19fd SHA-256: 3d9a63eb38d34653e6e3eebc9fb9ee9356911dd29919cdb90312a6f6d10a37cc
196 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which appear to be part of an SEO link farm designed to drive traffic or host malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary malicious URL identified is https://lozipotod.ru/award?keyword=administrasi+tes+cfit+pdf, which is likely used for phishing or to redirect to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://lozipotod.ru/award?keyword=administrasi+tes+cfit+pdf PDF link annotation
    • https://s3.amazonaws.com/wupiwupiwot/section_21_notice_to_tenant_template.pdfIn PDF document text
    • https://koponabunabo.weebly.com/uploads/1/3/4/5/134520941/5547331.pdfIn PDF document text
    • https://meligobuv.weebly.com/uploads/1/3/1/0/131070858/resezir_katotikejixux_latejimiwabelib_dufuze.pdfIn PDF document text
    • https://zolegezuboz.weebly.com/uploads/1/3/4/4/134462972/reboxemedorevojepe.pdfIn PDF document text
    • http://shopyou.online/upbte_revaluation_form_2019_last_dateo5qe5.pdfIn PDF document text
    • https://nomukemometikuf.weebly.com/uploads/1/3/1/4/131483138/571de2f43.pdfIn PDF document text
    • https://leloturopuroka.weebly.com/uploads/1/3/5/9/135956930/69dfecc0.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/73607861811.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/twinkle_twinkle_little_star_sheet_music.pdfIn PDF document text
    • http://minomesiguziv.22web.org/diretalapememijupezo.pdfIn PDF document text
    • https://kosonijuzar.weebly.com/uploads/1/3/5/9/135974682/xopafa.pdfIn PDF document text
    • https://sabumamopadav.weebly.com/uploads/1/3/5/9/135957329/ruvomusasosa_tosabogadukud_metesuzalajize.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/bank_1_catalytic_converter_nissan_maxima.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/wapet.pdfIn PDF document text
    • https://fuvapevamasazu.weebly.com/uploads/1/3/4/5/134507747/834282.pdfIn PDF document text
    • http://hurricane1.space/antifungal_susceptibility_testing_methods15ggs.pdfIn PDF document text
    • http://satomupudogoni.22web.org/kagulabimexafisanosot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pavasokunise.epizy.com/roadmap_powerpoint_template_free.pdfIn PDF document text
    • http://xesidif.epizy.com/electromagnetic_radiation_readworks_answer_key.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9E 5260 bytes
SHA-256: 4c5040e63d4a1ca090516a99708c31d2cee868388977a1a54853ca7b61894b07
font_01_sfnt_off00010d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D62 2540 bytes
SHA-256: 04a1510cf805ba74aa14cb8cf5c199ad30526fcabe134d006cb18ed56de43d65
font_02_sfnt_off00011808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11808 11008 bytes
SHA-256: c890b07076889780a5f1a25d4d58e0985d740d6c4ad311095aec865b8fa19018
font_03_sfnt_off00013daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DAF 16352 bytes
SHA-256: 4c01831bdfffbafff55fd55c88415eb2201da44b622d6ec769a15ea8bc50db3f