Malicious PDF — malware analysis report

Static analysis result for SHA-256 80727d519e6ae181…

MALICIOUS

PDF

78.2 KB Created: 2021-02-19 02:20:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7baccbf25763ccf188b624dbdf2dd32a SHA-1: cf00a26618c68550a668531504121dfa6e41b5c8 SHA-256: 80727d519e6ae181b98bcb49dfcdfe3540f6a16510e1d3570b7ced5809b6a380
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many of which point to disposable hosting and are likely used to redirect users to phishing or malware distribution sites. The document body, though heavily obfuscated, appears to be a lure related to 'royal oaks elementary kannapolis nc', suggesting a targeted phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wix?keyword=royal+oaks+elementary+kannapolis+nc PDF link annotation
    • http://tenp-mail.xyz/pay_my_business_verizon_wireless_bill7re1t.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/hcieogg/flick_goal_stage_2.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/Jmggifg/golf_clash_tommy_expert.pdfIn PDF document text
    • http://sy0n.icu/tewivatuvujiruxab4rrs.pdfIn PDF document text
    • https://cdn.sqhk.co/xasexuwosul/19hcgGK/coin_master_free_spins_hack_generator.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/ifbtfhh/vegilirigovubumaduti.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/vidudow0bcvi.pdfIn PDF document text
    • http://interstart.online/full_wave_and_half_wave_rectificationazao9.pdfIn PDF document text
    • http://bahis-sikayet.com/inclinator_elevator_troubleshooting_guide9wbgy.pdfIn PDF document text
    • http://artelamp.store/spirit_animal_quizif7mg.pdfIn PDF document text
    • http://lnstgramhelpcopyright.com/ruxawowu8y7md.pdfIn PDF document text
    • https://cdn.sqhk.co/tarudifirew/hdhf2ii/bisoxe.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/rurosaveruk/78241579672.pdfIn PDF document text
    • http://mowadavukusut.epizy.com/76544949417.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/taarak_mehta_ka_ooltah_chashmah_image.pdfIn PDF document text
    • http://tolamepaduxeju.rf.gd/descargar_baidu_root_apk_gratis.pdfIn PDF document text
    • http://kagapari.rf.gd/reseziv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD986 5252 bytes
SHA-256: ce3d54d20fdf9d9e9e3a4b90804dbd63584c647086a2e2deefb979a3180a37ba
font_01_sfnt_off0000eb5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5B 13528 bytes
SHA-256: 9ae234645f5a435221b2ff3b136c101e7a248d0bee896bef8b207a7011e7b91f
font_02_sfnt_off000116ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116AD 16076 bytes
SHA-256: d5797f08becf5301e59b03c9e561a561b786babfe4b2d135aa267657689c68fb

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