Malicious PDF — malware analysis report

Static analysis result for SHA-256 dabab302cc45195a…

MALICIOUS

PDF

76.5 KB Created: 2021-03-17 01:33:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b1c006ad21d4953f66c4cd479abe0669 SHA-1: e513db5b036ae3f09a96e788175ad1018b1b2fd5 SHA-256: dabab302cc45195a2bb9baaa246d87dee1625718a110e0eb135887b9fa0b1001
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=qu+genix+reviews+%25C3%25A9tat+de+new+york PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481510/normal_5fec0c6c930a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_60256f64a0ce6.pdfIn PDF document text
    • http://larts.digital/vertigo_movie_in_tamilmrz1l.pdfIn PDF document text
    • http://deluwotitawugo.iblogger.org/valixekadixaxidavonu.pdfIn PDF document text
    • http://lazimixaze.iblogger.org/88356109669.pdfIn PDF document text
    • http://spainwow.pro/calories_in_fruits_and_vegetables_chartjbfgi.pdfIn PDF document text
    • http://vasavomuko.iblogger.org/63356122779.pdfIn PDF document text
    • http://jinosewifuwefe.22web.org/xelapivikalep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392853/normal_5fe47dffddafd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389353/normal_5fd957d340f7e.pdfIn PDF document text
    • http://vukosam.22web.org/areas_of_a_circle_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dujisuga.epizy.com/bearing_arrangement_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf054d9d-ac45-4a5d-a385-e89b4642841b/medical_laboratory_science_examination_review.pdfIn PDF document text
    • http://xilawon.epizy.com/88267223020.pdfIn PDF document text
    • http://retipike.rf.gd/78414367166.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/990d1e66-ef0e-4d50-80ee-d7803ba4e258/the_shack_movie_netflix_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4db59b37-18a8-4459-ad0e-9502b553392d/delutigojadagaxuso.pdfIn PDF document text
    • http://safuzidavoje.rf.gd/87515642056.pdfIn PDF document text
    • http://zigejobo.epizy.com/beneficios_da_agua_alcalina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59c7a3f9-d5df-4e6c-a992-7881e320096c/85028321730.pdfIn PDF document text
    • http://ziwejozaz.epizy.com/how_much_does_it_cost_to_install_a_septic_drain_field.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_off0000e89a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89A 5548 bytes
SHA-256: 5a48856086054a4b213a5ee2026f3da60b329c96bed82b5c5f89432a428536ba
font_01_sfnt_off0000fb6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6E 12608 bytes
SHA-256: 011ee478f1348db60e50c9257d0b904341b95bf2de2efc81d75b33c08b146f77

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