Malicious PDF — malware analysis report

Static analysis result for SHA-256 0afdb7acf82ca02b…

MALICIOUS

PDF

65.2 KB Created: 2021-06-21 05:26:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ee6436561ccf2907a6a483a4a7a5aa1a SHA-1: 94746e405020745d3ae52ac98bc051b5260c791b SHA-256: 0afdb7acf82ca02b9f46b9f65dc9eaebc2e1016f894c43c1f516e53e2c82d969
156 Risk Score

Malware Insights

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

This PDF document contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed for SEO poisoning or phishing. The primary URL, 'https://allytemp.ru/uplcv?utm_term=hate+story+2+full+movie+watch+online+free', is presented as a lure for a movie, likely to trick users into downloading a malicious payload or visiting a phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 https://allytemp.ru/uplcv?utm_term=hate+story+2+full+movie+watch+online+free PDF link annotation
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d3b341fc7---lubosasezuxebodobebirobo.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/nepalabugo.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bf7fca7fe7b---zobegiwevave.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/16085020c89129---refupo.pdfIn PDF document text
    • http://klefmarken.se/upload/file/53276432628.pdfIn PDF document text
    • http://garmagostaran.com/Upload/file/judewano.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160824eb8192af---defifuzozobafutajuji.pdfIn PDF document text
    • http://greenworx.eu/images/uploads/files/dexon.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/84274dfc8281a2435cffd9bd62e3a394/gajuxebanalefinus.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16084bc624d907---57029910207.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/7e6cfb9bf68076e13e011473c9c162af/gibuzosebuxofirut.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/bebadisamidafovizi.pdfIn PDF document text
    • https://mymango.ru/wp-content/plugins/super-forms/uploads/php/files/00811b72f2819115bd7a754a228c5b7a/tiziwotiduzima.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608260b5aa7c0---ruzalavubiritosuz.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/badf2ed58072a42ac444d4c5ebba7f57/80606977960.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/agle86npthmnq471kksmp787te/88737687313.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c13c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC13C 5468 bytes
SHA-256: d95f4154aa0dcb650032b4ea10cdd328be60b65a6793dfbd40a6f71f9ac1894f
font_01_sfnt_off0000d3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C7 10452 bytes
SHA-256: c3dd163e41caf84f112421e0cf981239f597a3065edb0861ef5b169ac751ef18