Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bdb7dc81ce0056…

MALICIOUS

PDF

84.2 KB Created: 2021-04-04 14:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4f56f68b3ac4a38b5cbfc2627a3eb48f SHA-1: 9232a62d18cb84d2ab18129667669e745896aa16 SHA-256: 27bdb7dc81ce005656faf73692d3929cbf030442b952e04a48d77d780383e395
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=deviant+spectre+osrs In PDF document text
    • https://kanavedofi.weebly.com/uploads/1/3/4/7/134703074/dbf0601716e.pdfIn PDF document text
    • https://leluwimatuw.weebly.com/uploads/1/3/0/9/130969986/290144.pdfIn PDF document text
    • http://rakajipof.22web.org/12490898636.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/gifigPh/sony_music_center_app_equalizer.pdfIn PDF document text
    • https://bibatajikoxego.weebly.com/uploads/1/3/5/3/135315017/lizipifas_benawab_ladakipedokovuk.pdfIn PDF document text
    • http://sijazoge.iblogger.org/algerian_font_mac.pdfIn PDF document text
    • https://jikujumek.weebly.com/uploads/1/3/5/3/135318263/wujagixibipofujeni.pdfIn PDF document text
    • https://nolaguga.weebly.com/uploads/1/3/4/3/134307058/756302a8.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/adobe_converter_free_download_for_windows.pdfIn PDF document text
    • https://cdn.sqhk.co/fajixojemom/zjhprzo/votafan.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/somamere/56831178871.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/gexojebawovikububu.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/lepowusagulilol.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/gw2_fractals_beginners_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/rafofuvux.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/regla_de_tildes_en_espanol.pdfIn PDF document text
    • http://nuluwajewugutik.onlinewebshop.net/68828419473.pdfIn PDF document text
    • http://jepujaburadobiw.epizy.com/heath_anthology_of_american_literature_7th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/what_internet_modem_is_compatible_with_spectrum.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/ati_radeon_hd_4200_free.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/86507430452.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C81 4956 bytes
SHA-256: 16b977f25c8f7efee27ad73b51fb48698ffc5bbd92c645cf652a6313c983b24e
font_01_sfnt_off00011d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D78 11336 bytes
SHA-256: e4d951d6092f8cb74c45af5060ea55d27dd02fde4b2e1f931efb592f95f5a736

Open this report in the interactive analyzer, or submit your own file for analysis.