Malicious PDF — malware analysis report

Static analysis result for SHA-256 59781193a68ad43b…

MALICIOUS

PDF

82.0 KB Created: 2021-03-31 20:19:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 8ca876dc5ff532a86a16fff3f725e94e SHA-1: 5429e28051ef66ee6f01780cf184e53049c8dc6a SHA-256: 59781193a68ad43bc04ab7cb83d176cc86ed5328eda924e4dfbebddb5cb66d65
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing campaign. The embedded document body text, though corrupted, contains keywords related to 'Tesla model 3' and 'price in Canada', indicating a potential lure for users interested in car purchases.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=tesla+model+3+standard+range+plus+price+in+canada PDF link annotation
    • https://cdn.sqhk.co/nemoludajedu/hfidThi/karelawofubuzakowavaro.pdfIn PDF document text
    • https://cdn.sqhk.co/dafisuwikib/hgtjahf/kovodaxife.pdfIn PDF document text
    • http://sewonmedix.ru/watosapofasevafowugiwelfunjf.pdfIn PDF document text
    • https://pipabujul.weebly.com/uploads/1/3/2/6/132680817/wewakatupexaludafap.pdfIn PDF document text
    • https://milarenu.weebly.com/uploads/1/3/2/8/132814898/felezevarakopoz.pdfIn PDF document text
    • https://soliduratop.weebly.com/uploads/1/3/2/3/132303261/7555535.pdfIn PDF document text
    • http://medtechnika1.ru/tifuzapisoba6o9qv.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/pisamotozom-muxuvamilow-kofurifowodomel-rigisis.pdfIn PDF document text
    • https://tunoworuv.weebly.com/uploads/1/3/4/0/134017870/2035718.pdfIn PDF document text
    • https://cdn.sqhk.co/bepifopid/MSzidhc/73796322676.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sujawusoxenum.rf.gd/habits_and_routines_esl_worksheets.pdfIn PDF document text
    • https://e6a48395-9ebc-465e-8505-c4b20d7b8e72.filesusr.com/ugd/81e12b_53375b6454fe4aa5b2850b950cae6eb5.pdf?index=trueIn PDF document text
    • https://58eafb2e-ea74-4523-a1b2-d2e0fe9bfe54.filesusr.com/ugd/466fa0_01c92bafba0c4d868eeb5ea7b0ec13c0.pdf?index=trueIn PDF document text
    • http://kaluzepo.rf.gd/22786633009.pdfIn PDF document text
    • https://4c72699b-aa2e-4dc8-8bd5-1a54e8f938a6.filesusr.com/ugd/f3cb45_b87c85e0eb9a4d2b8057ae1419c93888.pdf?index=trueIn 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_off000103ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103EA 5508 bytes
SHA-256: c665201d5b39f1d2900423e195fa123e78884580da96a8c9ead45d7d06d0614b
font_01_sfnt_off00011687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11687 10648 bytes
SHA-256: a242024ea062d2e78056bd85e3f6480b2f54cc08aad1fdfea5c9a8e2f41e17ae

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