Malicious PDF — malware analysis report

Static analysis result for SHA-256 47beebeec59d7408…

MALICIOUS

PDF

81.1 KB Created: 2021-03-07 20:43:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 8b434965fac24503913177908828d9ea SHA-1: cd435981d4bfe632768a53e21879cf03b18daec6 SHA-256: 47beebeec59d740831a9a98c9df0de3293a782b463a474627bc553b91d336c4d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of external URIs and the PDF's structure point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/wix?keyword=apologia+chemistry+answer+key+pdf PDF link annotation
    • https://cdn.sqhk.co/masezupusi/cnij5Y9/tejoxapegififanax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377112/normal_5ff354d63005f.pdfIn PDF document text
    • http://lazirawolewok.getenjoyment.net/how_do_i_program_my_directv_remote_to_work_my_tv.pdfIn PDF document text
    • https://petavigavixate.weebly.com/uploads/1/3/4/4/134459614/af4872.pdfIn PDF document text
    • http://nekidifuton.medianewsonline.com/2019_tesla_model_3_msrp_used.pdfIn PDF document text
    • https://fibobamoga.weebly.com/uploads/1/3/1/6/131607866/zokovanaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/waderapal/aaigIMQ/96727678876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427268/normal_6017409b5a35c.pdfIn PDF document text
    • https://cdn.sqhk.co/fomezawelud/7jfT4U1/relaxing_sleep_music_rain_sounds.pdfIn PDF document text
    • https://fegajasun.weebly.com/uploads/1/3/4/5/134502742/2bc12ae69e5a.pdfIn PDF document text
    • https://nivosuvadifo.weebly.com/uploads/1/3/5/3/135384950/8f39cc0c26338e.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/top_paw_double_door_folding_crate_instructions.pdfIn PDF document text
    • http://vonexalux.sportsontheweb.net/does_the_navy_seals_have_a_height_requirement.pdfIn PDF document text
    • http://begajezi.22web.org/wilojokilure.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/poguvelefa/fezuvapikujitonibikamawap.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/61294359312.pdfIn PDF document text
    • http://siniligavaxuvul.onlinewebshop.net/is_dr_fuhrman_diet_healthy.pdfIn PDF document text
    • http://lenofuwunu.rf.gd/nexorokazebat.pdfIn PDF document text
    • http://rifesos.epizy.com/badger_meter_pft-_4e_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/pimexa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF463 5604 bytes
SHA-256: 6c5395e8453173c992596c3248bc9e950e85a0ebd90283f61035510b4824cb7d
font_01_sfnt_off00010758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10758 9848 bytes
SHA-256: 4948f4f65022df76bd23f5f62265ae0ce7a5ff9104acb429f6ddcbbd36ce8c59
font_02_sfnt_off000128f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128F7 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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