Malicious PDF — malware analysis report

Static analysis result for SHA-256 f150b56506bb5096…

MALICIOUS

PDF

72.0 KB Created: 2021-03-16 08:45:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da9a2e74e51a37effbe0aace93c7b52c SHA-1: 7d53e8da84770e5cef7ffa2efbdff3f2e1ad01b0 SHA-256: f150b56506bb50962a50c5312a1efd256aa71ac0c08ee3b72370456536367d23
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to technical manuals, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://xezojetit.ru/wix?keyword=boeing+747+maintenance+manual+pdf
    • http://fafijitesulexiz.mygamesonline.org/bobamadukupezetotupeveb.pdf
    • https://cdn.sqhk.co/gikasiful/eichbjh/chroma_key_premiere_pro.pdf
    • http://fruct.space/fundido_meaning_in_portugueseza6mh.pdf
    • https://cdn.sqhk.co/mudaxomemut/hjZZPic/case_reports_in_nejm.pdf
    • http://migriruy.ru/fozudegogonijolenamegdnu3l.pdf
    • http://tipijijajofupi.sportsontheweb.net/deripetovodikofu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zoromexemuzid/patevinamezufup.pdf
    • https://s3.amazonaws.com/wezukep/funchal_cruise_port_guide.pdf
    • https://s3.amazonaws.com/sebunuzu/dpc_annual_report_2018-_19.pdf
    • https://uploads.strikinglycdn.com/files/9fa26b2d-edfe-487b-850c-8f7e6b019a3d/22678613436.pdf
    • https://s3.amazonaws.com/bidemewufa/treatment_of_acute_myocardial_infarction.pdf
    • https://uploads.strikinglycdn.com/files/177f6150-fce7-4f3d-80e4-75048f7f54fd/jujexokidotinanejomo.pdf
    • https://uploads.strikinglycdn.com/files/8f87a9c3-0ed3-4b37-9593-ea8bd3514537/hp_deskjet_1512_ink_-_tesco.pdf
    • https://s3.amazonaws.com/jezekemunidup/coronary_circulation.pdf
    • http://bivojeda.atwebpages.com/16670523704.pdf
    • https://s3.amazonaws.com/lorifumofelu/80276638268.pdf
    • https://s3.amazonaws.com/gopuze/anuncio_publicitario_caracteristicas.pdf
    • https://s3.amazonaws.com/wuwabobujasivor/zukuzujaxokozemefazib.pdf
    • 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_off0000c999.bin
8dd3b08200cda350548929ad093ca208c85daaeb425c6fb21de5e2a8c0c8e174
pdf-font-stream PDF embedded font (sfnt) at offset 0xC999 5300 bytes
font_01_sfnt_off0000db97.bin
34237211d3176e7626d42e892bfe5a3eca0fb0cb75f313af02f988375529d23e
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB97 12744 bytes
font_02_sfnt_off00010445.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x10445 4324 bytes