Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8eeba977a687772…

MALICIOUS

PDF

99.9 KB Created: 2021-03-21 08:43:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b524488035eabbf0d4ad3b6efc056ad9 SHA-1: d868e764840ab0435e5c4945c7f11d93bdef209b SHA-256: f8eeba977a68777238d38d73967f9175e0b87db0c5efd9686854afbadc73bf74
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting and potentially malicious domains, as indicated by the PDF_SEO_DISPOSABLE_LINK_FARM heuristic and ClamAV detection. The document body, though heavily obfuscated, suggests a lure related to a 'Waring turkey fryer manual', which is likely a pretext to drive users to malicious sites. The presence of embedded URLs and the ML classifier's high confidence score further support a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://lozipotod.ru/wix?keyword=waring+turkey+fryer+manual PDF link annotation
    • http://axecheat1.xyz/vehicle_log_book_template_sarsm9adf.pdfIn PDF document text
    • http://899themes-demo.ru/inicio_de_ciclo_escolar_2019_a_2020_mexico9tme6.pdfIn PDF document text
    • http://nefritthebestthing.site/160705930065cudb.pdfIn PDF document text
    • http://copyright-services-us.com/melebivepirp77j.pdfIn PDF document text
    • http://makamar.online/40124050010hjexb.pdfIn PDF document text
    • http://ergors.space/bunuxobizowaninvtiu5.pdfIn PDF document text
    • http://anarchymedya.com/84881516420fqxh6.pdfIn PDF document text
    • http://cmb-accueil.com/16230781266rra2s.pdfIn PDF document text
    • http://stroiline74.ru/49144124580bzdmp.pdfIn PDF document text
    • http://pop-marketplace.ru/cambridge_igcse_business_studies_coursebook_answersipv99.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_6df7805041e54ba58a1d68c3e3e99c0d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xojafemori/surah_an_naba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad4145d6-7392-4a2f-ae34-6e957457746d/tuxumivipufidepineku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a904fb8f-a0ed-4894-a77c-4ae5ac6fd468/diana_palmer_latest_releases.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/xetiwisudedinofavovas.pdfIn PDF document text
    • https://74df6fe0-557b-4e47-8461-f2df536053d0.filesusr.com/ugd/4dcf4e_f4c9b599bcd34b1c8ad3ba1df3505657.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bugutaj/36525581237.pdfIn PDF document text
    • https://e9b66cc5-9289-431c-8f17-6739e1cd2d88.filesusr.com/ugd/c8f33b_b731607f4d894f1ab7f4cee6edaa0228.pdf?index=trueIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_9dbf11de79e54cca94abc54d536f70da.pdf?index=trueIn PDF document text
    • https://7e8267f5-6380-480e-ad72-df526eaefc07.filesusr.com/ugd/cbe325_5ac290c889ef481e819fd4607894cf80.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3800240-8fba-4075-806f-5d66e3c6c87b/82169065659.pdfIn PDF document text
    • https://e791dc30-71fd-4519-a75e-453748eb9c32.filesusr.com/ugd/8a5fcf_7fe2bb13cb364bc0981fe5fe799da689.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mulerux/header_html_template_free.pdfIn PDF document text
    • https://ba739632-11db-41f7-a023-683a20e55d36.filesusr.com/ugd/99835b_658180f291234312bb8dfdc8e60a361e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/38293237690.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_off0001496d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1496D 5088 bytes
SHA-256: bfada026e9a383efca4de03ec197753851573917274b9e67547789c17de8043a
font_01_sfnt_off00015ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AC5 11708 bytes
SHA-256: c4da6aab67664d9820e12f9ced0de0d35f79fe202005fbdec74f3c49fd5b86f6