Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7720054ec63dd2…

MALICIOUS

PDF

75.2 KB Created: 2021-06-28 02:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 17666f5f751de9435d1d0c2244619d0d SHA-1: eba269e153b7c03ebbe89abc2c6b5f5c566ca865 SHA-256: ff7720054ec63dd2828c9f124685549b340e3cd86ec13e2bec156bf2c5d8c25e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to various websites, many of which appear to be compromised or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of external URIs and link farm heuristics confirms the document's purpose is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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
  • 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://nomylo.ru/uplcv?utm_term=pinoy+movies+online+site PDF link annotation
    • http://hoshitorionline.com/uploads/files/pemozowajawoka.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/6fad5bd8f429cc0292827092b5f02027/tisonarasas.pdfIn PDF document text
    • http://avision-italia.com/userfiles/files/86699361105.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c42aa8b72c---34832458176.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4073d8298---fewewotinutelizuzolilov.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7cc222947---20660783060.pdfIn PDF document text
    • https://suksesunited.com/contents//files/26564072757.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16080bb50865c2---vinipirebenoziburod.pdfIn PDF document text
    • https://bursakaynak.net/userfiles/file/34771651255.pdfIn PDF document text
    • http://luatsuphutho.com/upload/ck/files/gaxopebusetirupipufimafi.pdfIn PDF document text
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/9cd6251eca7bb6a02c08eda4aea873c4/66002174334.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/fuqrgg3gvrcdkq1t2m0s36omn1/77860986993.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4da767060c---nimesabokewiro.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/c903da5627deb11b6cfa08d7f4863b66/vitovuvididodigoriwa.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/2a2c0699301c2d9986ff8b8332bf3e68/jekorokitetus.pdfIn PDF document text
    • http://xn--om2b25zm6igqb.com/ckupload/files/nakofexupuwobowawerawu.pdfIn PDF document text
    • http://jatyn.cn/upfiles/202105/file/1621811462.pdfIn PDF document text
    • http://yangpupark.com/uploadfile/files/legapovinawewizovuzif.pdfIn PDF document text
    • https://alzubidi.com/userfiles/files/xivixamigixeno.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16092e0c6a07c4---jarazafokonibigejipadaxu.pdfIn PDF document text
    • http://dobrasekacka.cz/userfiles/file/kikizi.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609107a671c92---rabojipevulilibidafesut.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_off0000c82f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC82F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE041 15792 bytes
SHA-256: d2fd08a4a43d8322a99c061997634a79e917aa627e737aed4a24e2126c56888a
font_02_sfnt_off000108b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B8 10188 bytes
SHA-256: 5e62d1263783b32276a18f1f5f55ee511e3b6e4397357d79dc067986da2433ac

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