Malicious PDF — malware analysis report

Static analysis result for SHA-256 2febaee1e7ce1c6f…

MALICIOUS

PDF

67.8 KB Created: 2021-03-06 20:15:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 77da6fb9744e4f487007f0977660e3d1 SHA-1: e1584a8d3f9d6798a6444ed985652ec79dfb5cf6 SHA-256: 2febaee1e7ce1c6f1de4b1cfa02a940e41b6c8b693bab12ec008a76cdcb18efa
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing attempt. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM specifically identifies the document as a non-clustered link farm on disposable hosting, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/wix?keyword=toys+r+us+distribution+center+mcdonough+ga+address PDF link annotation
    • http://7lessons.site/tp_link_extender_manual_re305rliu7.pdfIn PDF document text
    • http://usacarins.com/sajudinozf57os.pdfIn PDF document text
    • https://cdn.sqhk.co/jaziwuke/aOrwZic/cute_hairstyles_for_black_girls_braids.pdfIn PDF document text
    • http://moitender.org/noxibaxesozojusezofinpik7i.pdfIn PDF document text
    • http://uscovidcharts.com/gamesaxegejegewuritrsrve.pdfIn PDF document text
    • https://cdn.sqhk.co/zitedefew/gfgggeN/45409880558.pdfIn PDF document text
    • http://basvuruizleme.online/100686591158ehd0.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/teacher_retirement_letter_to_board_of_education.pdfIn PDF document text
    • http://allostar.buzz/aimpoint_pro_review_2019hxd9w.pdfIn PDF document text
    • http://niluwipewuxasa.medianewsonline.com/20643268186.pdfIn PDF document text
    • http://swiss-gear-top.xyz/hp_officejet_pro_8610_apple_driveriomjp.pdfIn PDF document text
    • http://logawedulukudan.mywebcommunity.org/which_of_the_following_statements_regarding_reporting_under_gaap_and_ifrs_is_not_true.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pulutugorivexek.atwebpages.com/zuwuwusukisa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb1ed173-f1c1-4f19-9efd-944fd913f1fe/lajubaxole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12baa34a-5da3-4f33-9ffe-cea7c8b0d630/how_much_do_lawyers_make_in_malaysia.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/65577066020.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_off0000cba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA4 5512 bytes
SHA-256: 90d895dfc20d0b966a9ce5562d057f0a5f72f2a5781b4e33ea4923b68f61bd15
font_01_sfnt_off0000de39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE39 10412 bytes
SHA-256: cc5b0718774b75a7832512adbf369846f08a41e36080dc6e3692f0796c8e011c

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