Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d0a01b2629cdd0…

MALICIOUS

PDF

151.6 KB Created: 2021-03-30 10:26:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4d63b0882ba7b404c9a31d88a202b16a SHA-1: dd6456ac24aeafa07f8bb57e8a81d77966344e01 SHA-256: 10d0a01b2629cdd0f48511692f3e540094cdd78072a3b0077653a0474e7a013c
136 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing indicating it is a phishing lure for free downloads, directing users to a suspicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL and the document body, despite being heavily obfuscated, point towards a phishing attempt to redirect users to the malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
  • 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://jumiwimov.ru/award?keyword=aprendizajes+clave+5+primaria+pdf PDF link annotation
    • https://cdn.sqhk.co/bupewazadufa/pjfRvhj/online_photo_editor_remove_background_transparent.pdfIn PDF document text
    • https://cdn.sqhk.co/sixerusesebu/iMKijgj/wawum.pdfIn PDF document text
    • https://cdn.sqhk.co/vadetegubufo/hjxhijh/sawefukubadadevofunimafi.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/do_hansel_and_gretel_die_in_the_original_story.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/block_mania_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402933/normal_605667dbb55de.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/xagukatipilimulil.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/pulsar_220_images.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/fossil_wyvern_guide_osrs.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzitomizaj/d6Cjfut/peboparawinu.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/music_equipment_rental_contract_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369905/normal_5ffd6c7e12a88.pdfIn PDF document text
    • https://cdn.sqhk.co/xozirijor/5sihjee/zudusubu.pdfIn PDF document text
    • https://cdn.sqhk.co/xamowizaso/jfheijf/football_score_sheet_template.pdfIn PDF document text
    • https://cdn.sqhk.co/mamidusidozu/hcEjfhd/per_anhalter_durch_die_galaxis_film.pdfIn PDF document text
    • https://cdn.sqhk.co/rujuwawuju/jcRiegi/facebook_marketplace_central_nj.pdfIn PDF document text
    • https://cdn.sqhk.co/sivadapexiri/eiDKQiM/offroad_4x4_car_driving_mod_apk_revdl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bepolujogox.atwebpages.com/thermo_king_apu_memphis_tn.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E164 6744 bytes
SHA-256: 0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
font_01_sfnt_off0001f24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F24B 5600 bytes
SHA-256: d9ea0862129c008f9b7becccd4411ffcb11ccd9286341caa959afc57bca518f0
font_02_sfnt_off00020556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20556 2268 bytes
SHA-256: 2b17894289ef4ac549ca5ccbfe538e6ebde94701791c0542cba9a71f2d67f349
font_03_sfnt_off00020f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20F69 12888 bytes
SHA-256: 1c5936ec70db697d6b096b54736d31e222d960640d284a3cbed4fb580bdb9948
font_04_sfnt_off00023902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23902 16140 bytes
SHA-256: 159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61