Malicious PDF — malware analysis report

Static analysis result for SHA-256 c003bb26b6b2b0a5…

MALICIOUS

PDF

78.8 KB Created: 2021-03-16 06:53:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: da55efda2e5038ab24f847018b210aee SHA-1: 8ec00c36d38474b6453f0af12faa937d5856d702 SHA-256: c003bb26b6b2b0a54b1ad441346f00c14f655c0301164c3b026aee41f088d3f0
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document contains numerous embedded URLs, many pointing to disposable hosting, and one specifically crafted with a search term related to Excel VBA, suggesting a phishing or scam attempt. The presence of external URIs and the link farm heuristic strongly indicate a malicious intent to redirect users to potentially harmful sites.

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://maypoin.ru/strik?utm_term=excel+vba+range+variable+row+and+column PDF link annotation
    • https://solubowobadiwu.weebly.com/uploads/1/3/4/6/134642134/5ef037c.pdfIn PDF document text
    • https://kawotubizon.weebly.com/uploads/1/3/1/8/131871780/guwapuxakutodu.pdfIn PDF document text
    • https://jugunita.weebly.com/uploads/1/3/4/4/134440710/4175275.pdfIn PDF document text
    • http://rejinijajelu.22web.org/biographical_essay.pdfIn PDF document text
    • https://kinojapi.weebly.com/uploads/1/3/2/3/132302846/sifapetopu.pdfIn PDF document text
    • http://jatikepofa.22web.org/how_to_insert_bobbin_singer_4423.pdfIn PDF document text
    • https://lezanaxowap.weebly.com/uploads/1/3/2/6/132696506/1457519.pdfIn PDF document text
    • http://zewamiluwevegif.22web.org/48105201429.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://maxefaronuxugur.epizy.com/smith_hutson_scholarship.pdfIn PDF document text
    • http://zopatirek.epizy.com/nimajowizogeninosi.pdfIn PDF document text
    • http://mukokulag.epizy.com/12268822504.pdfIn PDF document text
    • http://gorefoverotiw.epizy.com/kogapomatolazo.pdfIn PDF document text
    • http://xuvufajozurez.rf.gd/zipiva.pdfIn PDF document text
    • http://xopalotopobeda.rf.gd/vukidirewigi.pdfIn PDF document text
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_81c5e76873a546c4bd5e27d44f9e082a.pdf?index=trueIn PDF document text
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_5405aa7f0657423f928f03407332a7a6.pdf?index=trueIn PDF document text
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_fefbf2392be748579f89f1bd4d01c2c3.pdf?index=trueIn PDF document text
    • http://mifofiz.epizy.com/55372960384.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE046 5396 bytes
SHA-256: b20dd05705a1ddbac2417853ad37ca2d306358942cae6c94e7dad7011e2cdc86
font_01_sfnt_off0000f2a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A3 10916 bytes
SHA-256: 0508a89ee96e2b25255974f6d64288b1736974a850b3b2276345c07b045900d7
font_02_sfnt_off00011853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11853 16232 bytes
SHA-256: e1fcaa290bc8b5aed85f312864440120c61db6abd2add9737883d56687aaee62

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