Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6917179eea5ba65…

MALICIOUS

PDF

79.2 KB Created: 2021-05-18 23:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: bddd5404bff8960b0d3d4e3a3a58f41f SHA-1: d59e9a5d1c5420866070977908c4c0500aa08e78 SHA-256: c6917179eea5ba65e3b612a7f28e3e879c225450d8baf99c22c5788388ff7367
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for phishing or to distribute further malware. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a malicious intent to redirect users. While no scripts were explicitly extracted, the presence of external URIs and the ML classification strongly suggest malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://mezovuduw.ru/strik?utm_term=coleman+mini+bike+parts+manual PDF link annotation
    • https://nuvutujozexavu.weebly.com/uploads/1/3/4/1/134131277/savivoxid.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/82dd1b2.pdfIn PDF document text
    • https://patoxudiza.weebly.com/uploads/1/3/0/7/130739147/derodavawonugini.pdfIn PDF document text
    • https://rudabukonavapuk.weebly.com/uploads/1/3/4/0/134016662/bapulapabisenos-tepurolobisolu-manur-rafogaxef.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/rowupuvasixurew.pdfIn PDF document text
    • https://darojavanobize.weebly.com/uploads/1/3/4/8/134889586/kefogomaka.pdfIn PDF document text
    • https://ritesevegozuvij.weebly.com/uploads/1/3/1/6/131606822/xosavosujutat_wukokada_xenaxov_nijafif.pdfIn PDF document text
    • https://fiferogupinuwa.weebly.com/uploads/1/3/5/3/135306016/174793.pdfIn PDF document text
    • https://komuwewolidixat.weebly.com/uploads/1/3/4/8/134871085/voporopixigesupu.pdfIn PDF document text
    • https://rukemakofep.weebly.com/uploads/1/3/5/3/135390043/fimutupediba_xobopuk.pdfIn PDF document text
    • https://xazalonabi.weebly.com/uploads/1/3/6/0/136086847/kululatedunutadiwo.pdfIn PDF document text
    • https://niwurakoj.weebly.com/uploads/1/3/4/5/134588258/4505991.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nameduroremasa.epizy.com/thailand_visa_on_arrival_form_2020_download.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/read_quran_online_with_urdu_translation_and_tafseer.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/juponobawivex.pdfIn PDF document text
    • http://gifojakuwijipiv.rf.gd/how_to_use_summer_infant_monitor.pdfIn PDF document text
    • http://komopojanali.rf.gd/hello_love_goodbye_free.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/xunivugawosemamux.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/homophones_worksheet_for_grade_1.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/group_d_answer_key_date.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/2055042293.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/17073460975.pdfIn PDF document text
    • http://dasowarixolusix.rf.gd/amnistia_internacional_pena_de_muerte.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_off0000fa03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA03 5072 bytes
SHA-256: 382ab0510677c4a41c8ccc2f1081593b50b6006dc251981067f30353a1d8b1f6
font_01_sfnt_off00010b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1D 10444 bytes
SHA-256: 2640f229f45bc3e20f2cff237453e3353db93043c5271a4229ee05d0deab040c

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