Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7aded2d5fa0fe09…

MALICIOUS

PDF

93.1 KB Created: 2021-04-30 02:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4564ab1c5df95242570332597bff8317 SHA-1: 0aa76c7e60371ea7d57cb9a0a79e79d36daff985 SHA-256: d7aded2d5fa0fe09896ee16dc27cb87714aa62ba3b1bd1c03fae65cce34b43ea
156 Risk Score

Malware Insights

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

This PDF was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document presents itself as an installation guide but contains a link farm hosted on compromised WordPress sites, suggesting a phishing or malware distribution lure. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to deliver malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f242e8c858---xatoravuz.pdf In PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074bb8374995---vifafamikaberetadeg.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/91363158f4e206a9e1a6a29e7deefbef/59806530228.pdfIn PDF document text
    • http://altinay-law.com/images/file/52742177801.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16071a3f69f152---xepebakitubepumelisolaro.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071ecd294233---kakitem.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607d7c940a859---97798727202.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087edc1923ac---84373105426.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/ss25ol04l7fno6j9dvhrvnr8ts/kododitafatukomi.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/0c4fc571bd45129648674a22d2524385/molijakabugukenepakibuxig.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/660a2c2ddb689b0d1085acdee0a0281f/pipezofovutiwadijused.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/ee2f3a45ad7aa8ee93469d7b39ffafdf/wabaguxojasozexelepiwu.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/n8bsh4ue30ddka6vjhr509hrk1/43750100290.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/volrtboo34825p61sq13rl9krp/sijojigivijowak.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/dc29d36030c0ad44a15a1deee4e157c9/13519843278.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=cisco+outdoor+access+point+installation+guidePDF link annotation
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10298 7332 bytes
SHA-256: c11730683773e9c6ef84358519d76dd36e60d51243814da67b1f52e5999584a0
font_01_sfnt_off00011bca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BCA 5144 bytes
SHA-256: 4df4d233df03f4a276af485467d566ee1aff404035849d827259d0394ea3b11e
font_02_sfnt_off00012d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D53 17072 bytes
SHA-256: d94ed4a7bd2a5c25c12c23c475d0dbee648bfc164183c12383804feca71a864d
font_03_sfnt_off00015c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C98 2792 bytes
SHA-256: 8def258463f8ceeb562f440ba53909e2fc2ad690c2cd7e659e0661a907e0408d

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