Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d9ae8a23feef41…

MALICIOUS

PDF

90.8 KB Created: 2021-04-06 23:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 96168035cac09386b3ff82d5383e4d2c SHA-1: 56bac9ae9ef9d19997afa88f4fa972ae1702c5b1 SHA-256: 14d9ae8a23feef417d874b89184e9ff0d4c5af123f48b2988224c4e01ff3da8e
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 0.9989

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/123?utm_term=mecanica+automotiva+senai+pdf PDF link annotation
    • http://fudopajir.iblogger.org/called_for_a_purpose.pdfIn PDF document text
    • http://kupivse.xyz/vidas_secas_filme_trailerp9m2u.pdfIn PDF document text
    • https://penaxixix.weebly.com/uploads/1/3/0/8/130813526/vuwud.pdfIn PDF document text
    • http://afracheat1.xyz/19635143742vpc3t.pdfIn PDF document text
    • http://itali-big.space/fiwopuxigasiraleroxbdy2r.pdfIn PDF document text
    • http://carinsusa.com/32173517605ci09c.pdfIn PDF document text
    • https://fajizaxaro.weebly.com/uploads/1/3/1/3/131381717/f9dc7b078b1.pdfIn PDF document text
    • https://fowuxodujokuk.weebly.com/uploads/1/3/4/3/134310829/682994cc61ea4bd.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/zedovivimo_xaruvuva.pdfIn PDF document text
    • http://newberginvestmentproperty.com/maze_runner_cast_2014eoof3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_ef85a321c1624f63ad1708415a1f7805.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/ministerio_de_seguridad_boletin_informativo_ascensos_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/black_and_decker_handy_steamer_hs800_manual.pdfIn PDF document text
    • https://c216880a-03a2-4774-ab7e-121c93799e8f.filesusr.com/ugd/b5aed9_da3db0ec4bed4e0cbe35aa5ddfc0d4c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/setezuvojedavipig.pdfIn PDF document text
    • https://3485775d-af35-4505-8fb4-f6750f575e04.filesusr.com/ugd/42f18e_2715e3f3f5914c8cb0207e31b884c170.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/the_canterville_ghost_burlington_2_eso.pdfIn PDF document text
    • http://nesenavepino.epizy.com/dd_classes_ranked_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/professional_software_developer_cv_template.pdfIn PDF document text
    • https://6e337ffa-6c75-4e98-916f-0cab85e7e3f5.filesusr.com/ugd/a22560_4b4d3487bd274af1a1cf747961f51fb7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wolina/sigmund_freud_psychology.pdfIn PDF document text
    • http://pitefabe.epizy.com/materi_sistem_reproduksi_manusia.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/what_percent_is_120_out_of_100.pdfIn PDF document text
    • http://morukigivarili.rf.gd/ejercicios_de_notacin_cientfica_2_eso.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F4 5240 bytes
SHA-256: 530364d06b478004619b577b0169643b5d49a79d9f68f6c2b68970b6696d7ff3
font_01_sfnt_off00011ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD0 14812 bytes
SHA-256: 1479e58ec6bf2d9a139cd540ebcbfdbd0f5e9669916ea55c194f660edf24e3d9
font_02_sfnt_off000146a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146A2 16064 bytes
SHA-256: 569f756873fd89e9ac54c2be6ee8ad0a68594ee77c2378937be7521d336ae4b9

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