Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeca7c86b35d293b…

MALICIOUS

PDF

80.7 KB Created: 2021-03-06 13:44:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6ebf9de27e710de30d02c1f04a516230 SHA-1: ee17eb60cbe88e0f28382805134f6367f126c46d SHA-256: aeca7c86b35d293b59657943e0b47cf536e712f6652e641772bb46168e3402ce
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 domains, and is flagged by heuristics as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

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://gimoguvi.ru/wix?keyword=wild+garlic+plant+south+africa PDF link annotation
    • http://podipotekoi.ru/sample_lesson_plans_using_multiple_i1usma.pdfIn PDF document text
    • http://ig-about.net/badisebokonipogifajhltal.pdfIn PDF document text
    • http://italiahot.fun/manual_de_access_2013_en_espaol_gratisogpuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427313/normal_6033cc19f28bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473637/normal_5fce5cbbe7e62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466172/normal_602c2dc81828d.pdfIn PDF document text
    • http://pelistens.xyz/5561863038quks0.pdfIn PDF document text
    • http://stonersfranchise.com/boveda_usa_user_guide4tfi2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476434/normal_603cccadbbe42.pdfIn PDF document text
    • http://doctora.club/dehydration_of_alcohol_to_alkene_chemguide8vsuw.pdfIn PDF document text
    • http://vashobereg.com/13231870998fynh5.pdfIn PDF document text
    • http://8bitbeardsco.com/vesukvo8o1.pdfIn PDF document text
    • http://modernstyle.pro/gejorakoxik1diii.pdfIn PDF document text
    • http://megatorg.ru/huskee_lt4200_price_newz2itw.pdfIn PDF document text
    • http://itrom.fun/29581103333ellk5.pdfIn PDF document text
    • http://sfr-espace.best/porazebanodokumikizotediqtd1q.pdfIn PDF document text
    • http://clientesdkb.com/56510968576us4xz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369926/normal_5fd09cc280519.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/1537fde5-c359-46b9-87c1-343f4a01ebfc/xusawitite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2ac4cf2-7904-4449-98b1-0c0028ffd9f9/manual_for_bosch_dishwasher_silence_plus_44_dba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e48e2aa4-ced7-487f-b935-cc8edc334727/sound_blaster_z_pcie_drivers.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_off0000fd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD67 5432 bytes
SHA-256: fe8cafaabcb4a226408d2438ce779b76ceb8d54a0d68e9d6b94f218c4466a0e1
font_01_sfnt_off00010fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FED 10664 bytes
SHA-256: d46a7b50191ca9d1d0c61866a5d63b15ec63a843a6d30b28055671c4f02e1536

Open this report in the interactive analyzer, or submit your own file for analysis.