Malicious PDF — malware analysis report

Static analysis result for SHA-256 babb2d580a680e63…

MALICIOUS

PDF

69.7 KB Created: 2021-06-01 09:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6373dd40db90bf374d5b91182d00a17e SHA-1: bcd145ace67faef97471aae4cc51043e0550cc83 SHA-256: babb2d580a680e63e9d7ec012d4c81ca93675af9952360d8e34e4b5e936d9c76
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a link farm on disposable hosting. ClamAV and ML classifiers strongly indicate malicious content, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure for a free PDF download, aligning with a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/123?utm_term=aashto+m+170+pdf+free PDF link annotation
    • https://wotilawijuv.weebly.com/uploads/1/3/4/8/134852567/7910433.pdfIn PDF document text
    • https://winomawapaba.weebly.com/uploads/1/3/5/3/135334931/palidavuzolomeb.pdfIn PDF document text
    • https://gekojufoj.weebly.com/uploads/1/3/4/4/134438070/9f8b7b9.pdfIn PDF document text
    • https://megafibi.weebly.com/uploads/1/3/4/3/134347288/zobumalo-mijesimitowa-viwiwedez-lodozodobiwom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://siruzosu.pbworks.com/f/silapepaxuj.pdfIn PDF document text
    • http://xutosop.pbworks.com/w/file/fetch/144445755/how_to_hack_payrange_washing_machine.pdfIn PDF document text
    • http://dijakezepo.pbworks.com/f/pelicula_de_pokemon_mew_vs_mewtwo_completa_espaol_latino_hd.pdfIn PDF document text
    • http://vowujepojez.pbworks.com/f/8755259350.pdfIn PDF document text
    • http://nefusim.pbworks.com/f/civil_engineering_geology_textbook.pdfIn PDF document text
    • http://mikabipi.pbworks.com/f/tabla_de_equivalencias_de_unidades_del_sistema_internacional.pdfIn PDF document text
    • http://sorawako.pbworks.com/f/cs_1.6_silent_aimbot_cfg.pdfIn PDF document text
    • http://zelovoguvunu.pbworks.com/w/file/fetch/144426939/73696835207.pdfIn PDF document text
    • http://lekipirunezi.pbworks.com/w/file/fetch/144415863/59019903479.pdfIn PDF document text
    • http://togiwuvoze.pbworks.com/f/how_to_use_color_toner.pdfIn PDF document text
    • http://tazijebep.pbworks.com/w/file/fetch/144419616/21294455551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc93416b-8eea-4210-9a54-f2ddc66464d2/8_inteligencias_multiples_ejemplos.pdfIn PDF document text
    • http://xosufixemuf.pbworks.com/w/file/fetch/144450534/26156931317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5847a04d-a06d-4ccc-940e-2ac1448e8d8b/gerariwinafukakakulegamiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3073f232-4cf9-4a72-a902-6d589dca6a97/tukekaziropemezekudokeliz.pdfIn PDF document text
    • http://kipizasuzeda.pbworks.com/w/file/fetch/144413793/ravpower_filehub_password_change.pdfIn PDF document text
    • http://xuruzinijub.pbworks.com/w/file/fetch/144424203/inshot_photo_editor_pro_mod_apk_download.pdfIn PDF document text
    • http://tisowowuduwe.pbworks.com/f/qumica_fsica_atkins_8_edicin_descargar.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_off0000d276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD276 5512 bytes
SHA-256: 9f2c91a8d6898202e6c88e03f48a3ce58fad5281053dc0ec1db318772956365e
font_01_sfnt_off0000e514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE514 10660 bytes
SHA-256: 8b827f83e63e64e9484afbad3b7c4e493ae10b0c08088299516e0894874a0a6c

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