Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa61ee8b73b5bc9…

MALICIOUS

PDF

75.7 KB Created: 2020-12-22 03:13:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: eaabe7df69031ecbb64a0daa1e4d18f8 SHA-1: a18a3ed5668a50a1d76d545ba946f3241c459d91 SHA-256: 9fa61ee8b73b5bc9d59002a8d8e0c869195ed1dffcc43dc2ee4804e61044d934
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded links, many pointing to disposable hosting or link farms, suggesting an attempt to redirect users to malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically flags this behavior, and the presence of external URIs further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://trafftec.ru/aws?utm_term=nursing+ethical+dilemma+informed+consent PDF link annotation
    • https://lelejijavifol.weebly.com/uploads/1/3/0/8/130874253/neluzote-fimot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486742/normal_5fc8f2e167af4.pdfIn PDF document text
    • https://womegirig.weebly.com/uploads/1/3/4/5/134506381/dagusabuj_biritatezej_winurizoxomi.pdfIn PDF document text
    • https://ribupawotomimam.weebly.com/uploads/1/3/4/6/134694318/xodokemaloze.pdfIn PDF document text
    • https://fupebabo.weebly.com/uploads/1/3/4/6/134601971/5241883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f8d5b760419a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5fbd131d2ebcf.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/xuvamuba/tuvabanarena.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/74541600739.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a83f4573-e2aa-43fe-a3e3-8d7af4ecf16b/wepunisiduxujipesavefoj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc826ac3cfda2dcf0aa550/t/5fdcf86c1223dd37365ab152/1608317036973/kunubovadojowexejokat.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3069e0a2757459bf0d6c4/t/5fc7a099c953717e09defd97/1606918297672/walesi_bardok_elemzese_roviden.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde7bb6c954b227390fcd8a/t/5fdf63810f6c913d44026cbb/1608475522097/cdr_format_viewer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4241603-9a45-4c7e-a18e-9b6a08d7cb9a/darth_vader_comic_2020.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_off0000ed01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED01 5404 bytes
SHA-256: 245084ea583cc6941ff0d615df8ae1dfd55f7c73649c15e9215c4c8ae089a029
font_01_sfnt_off0000ff3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3F 10056 bytes
SHA-256: f3d70c2b7263e32aefc0f08addd27c695bec9f407aa9833848cfe32eac6cd3fc

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