Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad64d7bad81e22b9…

MALICIOUS

PDF

107.9 KB Created: 2021-04-29 18:36:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 87cd76ee246843c2794e8c8ca9fefbb8 SHA-1: 99df79c029b7f5193a51a1e79c3f201ce489310d SHA-256: ad64d7bad81e22b9a5ac0d6a0df00ca72b81cb1863e2afb26690ca0f64d2c2e1
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a PDF link farm and ML classification. It contains numerous external URLs, suggesting an attempt to redirect users to potentially harmful sites or engage in SEO manipulation. The presence of embedded URLs and the ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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.
  • 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://dafemum.ru/strik?utm_term=traeger+grill+owners+facebook PDF link annotation
    • http://rapoxarawiwalo.sportsontheweb.net/gleichungen_mit_zwei_variablen.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/yziikgg/lutejufe.pdfIn PDF document text
    • https://fuxekuliwomu.weebly.com/uploads/1/3/4/8/134864819/buvawebiso.pdfIn PDF document text
    • https://faniwavuguvupos.weebly.com/uploads/1/3/4/4/134478403/gujewazaw.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/Mjbubhj/big_battle_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/savujegu/ieuichc/modern_gun_strike_counter_shooting_games_hile.pdfIn PDF document text
    • https://xaniwunedevivat.weebly.com/uploads/1/3/4/4/134470123/743a1e.pdfIn PDF document text
    • https://cdn.sqhk.co/dilipokoje/gcdhft3/vifuteliwoxuwewukemewasov.pdfIn PDF document text
    • http://zaxegod.getenjoyment.net/akrama_sakrama_form_57.pdfIn PDF document text
    • https://sejiganabukuja.weebly.com/uploads/1/3/4/5/134585043/redugike.pdfIn PDF document text
    • https://dofafurubes.weebly.com/uploads/1/3/4/7/134762343/6288072.pdfIn PDF document text
    • https://vexalujonesudu.weebly.com/uploads/1/3/4/7/134738084/71f6082c3ad8.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/45367636517.pdfIn PDF document text
    • https://zakupiza.weebly.com/uploads/1/3/5/9/135960967/jamovelavura.pdfIn PDF document text
    • https://budogifu.weebly.com/uploads/1/3/0/8/130874026/eb531.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/vunaxumarodurumofalu.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/repizixepali.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/50210400928.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/taco_bell_menu_breakfast_crunchwrap.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/bmo_financial_group_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/59196007142.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_off00014bb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BB9 5296 bytes
SHA-256: 76a767d224031b4b9e05db87a28083f2f1b87ec98bfc196b850a6cf6daee757e
font_01_sfnt_off00015ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DDB 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00016668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16668 10992 bytes
SHA-256: 9b3803698201967534d42c948b378768a1b7ca4587f253731256376f883a0ee1
font_03_sfnt_off00018c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C07 16312 bytes
SHA-256: 028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b

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