Malicious PDF — malware analysis report

Static analysis result for SHA-256 5002eb040d11de1d…

MALICIOUS

PDF

82.8 KB Created: 2021-03-23 23:01:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0119ca807c6c4cc8b60e52795928bb0e SHA-1: 3f1f8fcd8360155f5067c6bae439060c59895f24 SHA-256: 5002eb040d11de1d3575aad3b66dfb5cc695a8858abe4c3725c2395f3c8ab0c1
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the PDF structure and embedded URIs are indicative of an attempt to redirect the user to malicious content.

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 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 http://nokobefisedo.iblogger.org/khng_c_c_file_trn_google_chrome.pdf In PDF document text
    • https://nutomejeti.weebly.com/uploads/1/3/4/7/134702699/jexotativul-renew-renuj-dojadesuperub.pdfIn PDF document text
    • https://ninobajoxakatud.weebly.com/uploads/1/3/4/7/134702009/xujix_nosukudexo_zibepigefuxamer.pdfIn PDF document text
    • https://pawagidi.weebly.com/uploads/1/3/1/1/131164052/pikirigibewe.pdfIn PDF document text
    • http://hydraruzxpnew4af.exchange/semiologia_medica_goic_3_edicion_descargarzdnlk.pdfIn PDF document text
    • http://robinmani.site/6002683236xb8ff.pdfIn PDF document text
    • https://degepuwenezeg.weebly.com/uploads/1/3/1/6/131607310/sizetotujofoni.pdfIn PDF document text
    • http://vwwv-avito.online/spacecraft_landing_on_asteroid_200289eaz.pdfIn PDF document text
    • https://wezawemexa.weebly.com/uploads/1/3/1/4/131410399/e7d78113.pdfIn PDF document text
    • http://love-cosmetics.shop/kobalt_7_1_4_miter_saw_specso8dlh.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://feedproxy.google.com/~r/wb/ENAH/~3/B9wesDdUo4k/wb?keyword=acer%2015.6%20nitro%207%20gaming%20laptop%20reviewPDF link annotation
    • https://s3.amazonaws.com/xelimewat/wapking_hd_movie_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/digi_003_drivers_yosemite.pdfIn PDF document text
    • http://sisofejijo.epizy.com/vekewatukumoviromumavave.pdfIn PDF document text
    • http://wizebefekeb.epizy.com/2966210913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/696fec9e-486b-437c-baa8-4e5499b81337/is_the_stock_market_on_a_bubble.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b54f5464-06f1-446e-979c-90398f3f8cfb/75708627706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad493a82-acf6-4ab3-92f3-30f47c9fbf95/movetakisatujudexa.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/62665531177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eccd5d8-55fa-4629-846a-61eeed9c4863/macbeth_act_2_key_quotes_analysis.pdfIn PDF document text
    • http://fizaronaxur.epizy.com/65973637512.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/the_willpower_instinct_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3ded018-a0ad-4792-a51f-eb48eb54d3e9/kindle_keyboard_cover_with_built_in_light.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_off0000f973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF973 5448 bytes
SHA-256: 1a1fb4a2aa1ef0690d9e712f96567d2dc4e385f29fedb8b4d47421b29e7e4fa8
font_01_sfnt_off00010bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFB 10444 bytes
SHA-256: cef92a8f7752d12a386038b655d54744a594a99617e8595341db31eff6d66cb5
font_02_sfnt_off00012f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F85 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd