Malicious PDF — malware analysis report

Static analysis result for SHA-256 e764af05772ff506…

MALICIOUS

PDF

73.3 KB Created: 2021-03-09 08:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 794c8e81566d32a52061fbff5872ea69 SHA-1: 694a2bfe5947ab3be23c0b3fe9a1db1add03e67c SHA-256: e764af05772ff506263e7d941b87e6b91792a92c660ffa279ae47bc3668e2948
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, with one prominent URL pointing to 'xezojetit.ru', suggesting a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick the user into downloading a malicious payload or visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/award?keyword=tinkle+stories+free+pdf PDF link annotation
    • https://didekupava.weebly.com/uploads/1/3/1/1/131163833/6c6cd94f4.pdfIn PDF document text
    • http://mybestchan.online/grade_4_grammar_diagnostic_test3uky4.pdfIn PDF document text
    • http://vorgazme.com/openpli_cccam_ipk2ni9p.pdfIn PDF document text
    • https://nozuresosobud.weebly.com/uploads/1/3/4/7/134758814/zonutelimi-jabaluv.pdfIn PDF document text
    • http://batmbatm.ru/go_math_kindergarten_chapter_9_answer_keyqvoag.pdfIn PDF document text
    • http://dokumenty-kiev.online/sharp_weather_station_spc595_instructionsj7ig6.pdfIn PDF document text
    • http://poradoit1.site/calcedonia_minerallycyf.pdfIn PDF document text
    • http://eushopvmn.site/jatumofxnqaa.pdfIn PDF document text
    • http://ch-redirect.icu/what_is_zappos_worthc20ps.pdfIn PDF document text
    • http://onlinetyz.xyz/bolt_report_gretaan6h3.pdfIn PDF document text
    • http://dsv-trening.ru/vimulavonedudijaqfp4.pdfIn PDF document text
    • http://manthoughtswebsite.website/carrier_air_conditioning_instructions_manual3nsmp.pdfIn PDF document text
    • http://creditscoretracking.info/jaguar_f_pace_reliability_consumer_reportsdc2lt.pdfIn PDF document text
    • https://buvonumonub.weebly.com/uploads/1/3/5/3/135304713/41a08a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eebc2cb-ea37-40c4-922b-dcbbff4b61f4/govux.pdfIn PDF document text
    • https://a72b158e-cead-41d6-a0b3-8518216316a4.filesusr.com/ugd/35c6e2_c814209c1a6e4f0d868e749ffd7eab96.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1a0d3fb-af5c-4ba7-88e3-1e415bcb6988/data_analytics_classes_online_free.pdfIn PDF document text
    • https://ae26bae5-b1f3-4fb2-a0ba-5d2f2d23988c.filesusr.com/ugd/aec2ea_591a0f1b1dc34152b5fe3ed2ed8746f8.pdf?index=trueIn PDF document text
    • https://7a1f2a0d-094a-4466-88af-72a4af93b9fa.filesusr.com/ugd/22739b_cd7790ca60ae4c4697031199fce9aae6.pdf?index=trueIn 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_off0000e441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE441 4836 bytes
SHA-256: 1dfb51f35a2b543a05195bba328af2e1f99e1c1a65460768eb813586432661d5
font_01_sfnt_off0000f4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C4 10392 bytes
SHA-256: 689a6c5329f00ef18554c31b49735d9bcc2e43c769fb36ee83c0ed497c4105e1

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