Malicious PDF — malware analysis report

Static analysis result for SHA-256 564e37f18038ac9b…

MALICIOUS

PDF

88.7 KB Created: 2021-03-30 11:53:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ff203b5d667001fa0108a5c0a3a7e52 SHA-1: 57c202d1f665fa691a02033c6f34c8f864c8395a SHA-256: 564e37f18038ac9b14d8a86ac67924ce4fc3d07e90f35b8e27ac4719d05fd460
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it is part of a link farm or phishing campaign. The primary malicious URL identified is https://nipisod.ru/award?keyword=ielts+speaking+pdf+2020+may+to+august, which is likely used to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/award?keyword=ielts+speaking+pdf+2020+may+to+august
    • https://wapubepedud.weebly.com/uploads/1/3/1/4/131455956/e04b761e8.pdf
    • https://fuwofinirofen.weebly.com/uploads/1/3/1/6/131637723/65d6e.pdf
    • https://zarojapejafaro.weebly.com/uploads/1/3/5/3/135347044/4988525.pdf
    • https://kuboteradaragi.weebly.com/uploads/1/3/1/4/131482952/fupig.pdf
    • https://nosugorowemuz.weebly.com/uploads/1/3/5/3/135327492/xotekewi.pdf
    • https://podogavefa.weebly.com/uploads/1/3/1/4/131438056/5221358.pdf
    • https://dulodegusatoto.weebly.com/uploads/1/3/1/6/131636763/sezidixo.pdf
    • https://zigapugulila.weebly.com/uploads/1/3/0/7/130776078/kepopen-joxulufunup-tukegowodu-kufokifur.pdf
    • https://cdn-cms.f-static.net/uploads/4470545/normal_6061b264e4e66.pdf
    • https://lafasisagugugup.weebly.com/uploads/1/3/1/6/131637889/9952388.pdf
    • https://satepiwe.weebly.com/uploads/1/3/5/3/135350267/3779522.pdf
    • https://cdn-cms.f-static.net/uploads/4384029/normal_601701805491f.pdf
    • https://sukodijam.weebly.com/uploads/1/3/4/5/134516983/kezasanukitad_wabevo_jijitezaw_sozunegav.pdf
    • https://xanuzejo.weebly.com/uploads/1/3/1/6/131637194/gelotovozuxo.pdf
    • https://jozinuzo.weebly.com/uploads/1/3/2/7/132712000/wuzelurinufo_reguluzoteta.pdf
    • https://kifeketefisub.weebly.com/uploads/1/3/5/3/135347095/pufiv-lewetemijugola-toxupariner.pdf
    • https://texodixoxi.weebly.com/uploads/1/3/1/8/131857215/lexiforekow.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://c6de0af5-2a4c-46da-924c-839bccb102c6.filesusr.com/ugd/5f1f0f_ff1b09ab457544378655f6c5f845d6a1.pdf?index=true
    • https://19527f6f-7821-4b33-8e58-d909ab9a203f.filesusr.com/ugd/b18fc6_3e119f6404024936a656bdc195c0979d.pdf?index=true
    • https://cf62593c-3f62-494e-9ef9-3c2a63ead7d7.filesusr.com/ugd/93dae2_cdebbddce2d544aebdc56fefa88234c6.pdf?index=true
    • https://00407fa8-a9ef-4b78-9bbe-46147fc8acf6.filesusr.com/ugd/5ecadc_424768a33c7a48d0b67c528297eaf492.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001102c.bin
52834e3ff755f82324aa664e091d7768a2eae52d4c696ab7eb2b754c9c7ff0e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1102C 5524 bytes
font_01_sfnt_off000122ec.bin
506f6c7bd841bc0cead46fee70d3a6d08aa598413d7975433088726b4a648223		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122EC 10664 bytes
font_02_sfnt_off0001474a.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1474A 4324 bytes

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