Malicious PDF — malware analysis report

Static analysis result for SHA-256 d003cc8c474fe200…

MALICIOUS

PDF

85.2 KB Created: 2021-09-19 14:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: f9792d01bc6536cb1bc522f03a2c52f2 SHA-1: 3ad5e5fb30c8a30c224632748d985fc83f1b795d SHA-256: d003cc8c474fe2001aa8b6327e830018fe9480403869fb6a991efe115d60d34f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9974

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 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://synerhu.ru/uplcv?utm_term=bbg+zero+equipment+workout+pdf PDF link annotation
    • https://ecoquimica.cl/dinamicos/uploads/file/kolosuvitif.pdfIn PDF document text
    • http://tincorner.vn/uploads/files/97934332602.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f41c90245d---54438401677.pdfIn PDF document text
    • http://coiffurenais.com/userfiles/file/80405846586.pdfIn PDF document text
    • http://palestraarkadia.it/userfiles/files/majozefabevukupe.pdfIn PDF document text
    • https://ubk-sad.de/azubi/userfiles/files/12750321412.pdfIn PDF document text
    • https://gregoryshow.ru/files/file/20008445005.pdfIn PDF document text
    • http://warwick-ems.org/userfiles/file/51063893019.pdfIn PDF document text
    • http://xn--80aaae7amexjfdlfdfg.xn--p1ai/files/file/32402236600.pdfIn PDF document text
    • http://logisticsnetworks.net/ckfinder/userfiles/files/9941069833.pdfIn PDF document text
    • https://www.babetravelling.com/ckfinder/userfiles2/files/ritapub.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/3a48b185fe7fcc7cc49ac0e68091f5cd/41932918947.pdfIn PDF document text
    • http://www.hermosabeachbungalows.com/userfiles/files/25853646819.pdfIn PDF document text
    • http://bridgeonlaw.com/filespath/files/20210910072434.pdfIn PDF document text
    • http://tonghuichem.com/upload/files/44720237006.pdfIn PDF document text
    • https://0924055971.com/uploads/files/202109051829378430.pdfIn PDF document text
    • http://clinicaveterinariagussago.com/userfiles/files/84248604514.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/99338148750.pdfIn PDF document text
    • http://www.s-prom.si/fileupload/file/jelozowafug.pdfIn PDF document text
    • http://alteredcompta.com/buddha/ckfinder/userfiles/files/29967526664.pdfIn PDF document text
    • http://candientuvibra.com/images/file/kuxibiriperivikozozor.pdfIn PDF document text
    • https://datajournonepal.org/files/gozotomaja.pdfIn PDF document text
    • https://alutat.com/data/file/xelofowiw.pdfIn PDF document text
    • http://facilitymanagementassociates.com/survey/userfiles/files/14881811219.pdfIn PDF document text
    • http://yejida.com/userfiles/file/sefirebexu.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE854 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10066 17424 bytes
SHA-256: 823f88433bc636789b10b020505f3e248d96148801211687eb370dcdd87fa178
font_02_sfnt_off00012d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D6D 11144 bytes
SHA-256: 610b074d15314ee28ef76c47b897876f42ee09e4ca6d3e6a9da3974b3cb9e1bd

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