Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87e635b945febad…

MALICIOUS

PDF

85.0 KB Created: 2021-03-02 09:52:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 758e749106f20f565e564b7cbd7b0673 SHA-1: c1a6cb9737e7bd8838584f138cb73cc8521bb962 SHA-256: c87e635b945febadd2adbe57689398e0a4dc2502befce837beb7ac60fd451759
161 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file uses a lure related to 'fantastic mr fox full movie stream' to entice users. It contains a high-risk heuristic indicating it's an SEO/UTM redirector link, pointing to the URL https://mezovuduw.ru/award?keyword=fantastic+mr+fox+full+movie+stream. This URL is likely used for phishing or to deliver a secondary payload, as indicated by the ML classifier and ClamAV detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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/award?keyword=fantastic+mr+fox+full+movie+stream PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4444110/normal_5fee2fa03fa4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470968/normal_5fc5f5a34ac40.pdfIn PDF document text
    • https://vagezelez.weebly.com/uploads/1/3/0/8/130873856/ce83a2a2.pdfIn PDF document text
    • https://fisadurubimu.weebly.com/uploads/1/3/1/4/131409264/vemenejogoparo_poxasirolarud_tujalakiwis_xetuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450037/normal_60219dd2ba82a.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/a_method_for_praying_download.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/81390893895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368468/normal_602bd94d38ab3.pdfIn PDF document text
    • https://dolibaradodusop.weebly.com/uploads/1/3/4/5/134595809/nibemimifed_vuxufagedutuj_tuwumuw.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/25531549293.pdfIn PDF document text
    • https://lufojujerap.weebly.com/uploads/1/3/4/4/134481619/wojodon_tisaloromal_besorexigoz_turavojupokerat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372980/normal_5fcf3f6fb66d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484807/normal_5ff84c5536af0.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/curriculum_evaluation_report_sample.pdfIn PDF document text
    • https://suzefajadovu.weebly.com/uploads/1/3/4/5/134592553/tadugolaw-wezikuw-bilebudabod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401732/normal_601bfc91a6bdc.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000fa58.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000fa58.bin)
    • http://zavinawotomuvef.epizy.com/airdroid_apk_cracked.pdfIn PDF document text
    • http://zoguritekide.rf.gd/bjorn_lomborg_skeptical_environmentalist.pdfIn PDF document text
    • http://bupofisawum.rf.gd/bijusutoveb.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 extracted file (font_00_sfnt_off0000fa58.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off00013100.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off00013100.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA58 5108 bytes
SHA-256: a9a1135302f2b783c81b5dfb58a299dd96505161170d187033ba2611a430c797
font_01_sfnt_off00010bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB1 11304 bytes
SHA-256: 87c307bff46fc67aa540b6bb302e62f4eaa8100d92f356ec3a850c156dd68ad7
font_02_sfnt_off00013100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13100 16132 bytes
SHA-256: ccf879661c26e8d85a43d4fcfbba60320246430dcbf46b047d24072eb45b37a5