Malicious PDF — malware analysis report

Static analysis result for SHA-256 d06f4f2376536034…

MALICIOUS

PDF

80.3 KB Created: 2021-03-09 13:37:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 04da074708347734c0de9e765ee3bdc2 SHA-1: bdbc0a13ead3f90e29e10ae273f80045f7176dbe SHA-256: d06f4f237653603412c25a6d9fd499ebc59de60a66bfa829c921283e8c8f7b13
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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://leonvi.ru/aws?utm_term=descargar+libro+el+peque%25C3%25B1o+vampiro+pdf+gratis PDF link annotation
    • https://dulewidojupetor.weebly.com/uploads/1/3/2/6/132695372/wulalo.pdfIn PDF document text
    • https://pezumebudoko.weebly.com/uploads/1/3/4/6/134681460/parudanavor-werejoniperito.pdfIn PDF document text
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/1788210.pdfIn PDF document text
    • http://normal-id.com/anemia_falciforme_y_embarazolm9n1.pdfIn PDF document text
    • http://moneyindia.site/23419828248knnur.pdfIn PDF document text
    • https://liwifaxuje.weebly.com/uploads/1/3/0/8/130874244/tutipefawaf.pdfIn PDF document text
    • http://cardioactiveuficiale.site/3822327758036iuk.pdfIn PDF document text
    • http://wide-take.top/129023495497awkk.pdfIn PDF document text
    • https://biziliwedurukax.weebly.com/uploads/1/3/4/8/134889104/xumaz_xenibavegelo_kamuxomet.pdfIn PDF document text
    • http://svarka-aurora.online/738459705727483w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jobavo/vojolasutoxofuvawi.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/facebook_video_firefox.pdfIn PDF document text
    • http://dowijasimenazo.epizy.com/where_to_buy_furnace_ignitor_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/43242959853.pdfIn PDF document text
    • http://fotopokidag.epizy.com/battleship_full_movie_filmyzilla.pdfIn PDF document text
    • http://bifuganikidaliv.epizy.com/airtel_tv_channels_app.pdfIn PDF document text
    • https://1c985592-4fe2-425a-b8d2-7dc24782370c.filesusr.com/ugd/a13bc2_2708b5a28a2249ad9dac6d18105904bc.pdf?index=trueIn PDF document text
    • http://medojowibapij.epizy.com/nowonigilugugofe.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/28419408113.pdfIn PDF document text
    • https://e2604e0b-f95a-4acb-b53f-a7db3827b2a1.filesusr.com/ugd/225520_1c37caca61544491928cbadfd8e9cae9.pdf?index=trueIn PDF document text
    • http://povokufav.epizy.com/nefozitas.pdfIn PDF document text
    • http://vagilamiporaw.epizy.com/xuvudosikevejigi.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/bcgba_registration_form.pdfIn PDF document text
    • https://ded05c8b-f0d8-42bc-a64b-daa0b63394ca.filesusr.com/ugd/99afdc_778f21b551f646bd8acf32ffca3f3ea5.pdf?index=trueIn PDF document text
    • http://mibobugaf.rf.gd/hybris_cms_template.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_off0000f374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF374 6012 bytes
SHA-256: 419d21efd97e7f06adca702683eb508fe97a0fcd75a2fc62506ad64120a00056
font_01_sfnt_off00010796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10796 13000 bytes
SHA-256: ef916b2322c48069e194f163c3d91c64f4858bc6b3ca302d9e8fb1d4db812b31

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