Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ec26c0bbac686d…

MALICIOUS

PDF

73.6 KB Created: 2021-03-03 02:03:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 778a29b5f3d65aff137e86e29d1e5705 SHA-1: ce7409264f3233403377a619e5ac270d28a09560 SHA-256: f0ec26c0bbac686d74caadda5e1839743e0a54cab269693643790f0a485dfc2b
186 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 0.9999

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/wix?keyword=biographical+sketch+example+for+thesis PDF link annotation
    • http://fikodon.iblogger.org/vikiwiduwa.pdfIn PDF document text
    • http://1xbet-regi.site/352193908528o1v9.pdfIn PDF document text
    • http://registrat.space/how_to_describe_a_tequila_sunrise_by_the_eaglesixhpl.pdfIn PDF document text
    • https://vizegibog.weebly.com/uploads/1/3/4/4/134458583/5144008.pdfIn PDF document text
    • https://gemiporelowagi.weebly.com/uploads/1/3/0/7/130775846/netemomu.pdfIn PDF document text
    • https://wiromokuxuzub.weebly.com/uploads/1/3/5/2/135298753/9444550.pdfIn PDF document text
    • https://jomaredavox.weebly.com/uploads/1/3/2/3/132302995/4afa380f7.pdfIn PDF document text
    • https://gojojiwegojefuw.weebly.com/uploads/1/3/2/6/132695574/gifamebel_rokive.pdfIn PDF document text
    • https://voxipomawo.weebly.com/uploads/1/3/1/3/131379395/f7be185ae16b.pdfIn PDF document text
    • https://pivisagut.weebly.com/uploads/1/3/2/8/132815367/92f6c36ccdc.pdfIn PDF document text
    • http://3bki.ru/arcore_apk_modmqwq4.pdfIn PDF document text
    • http://kleomaften.online/how_to_get_rid_of_smelly_feet_for_goodlcgha.pdfIn PDF document text
    • http://5coupon.info/2005_cts_v_autocrossxo2ch.pdfIn PDF document text
    • https://wamogipoko.weebly.com/uploads/1/3/0/7/130739383/8269679.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/dogazisuze/remafa.pdfIn PDF document text
    • http://gadabejevetel.epizy.com/open_broadcaster_software_studio_obs.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/dugamowoxeroxejef.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/mudofuzofevotepodulopon.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_off0000e2ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AE 5612 bytes
SHA-256: 986bd533efe2d5bdfc1875b166adc871be81c9c64b9770132c7ea4d43b245220
font_01_sfnt_off0000f5a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A5 10424 bytes
SHA-256: 201d4587325c62f9e357406ed9666b2c1652ecd605fbd39183ddb99ac13027c9

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