Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a0a38b64a939cae…

MALICIOUS

PDF

89.7 KB Created: 2021-07-22 22:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 36aca8bd98453e0d8cc0adfbf09636e2 SHA-1: 9307c5d6fe887f5df1aa92aa526d94b282fdfaf5 SHA-256: 9a0a38b64a939cae7730faf2aecc56178480c1d7772a2590496600e62bde82e1
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it likely exploits a vulnerability or serves as a phishing lure. The document functions as a link farm, containing numerous URLs pointing to compromised WordPress uploads and other disposable hosting, suggesting an attempt to redirect users to malicious sites. No scripts were extracted, but the presence of multiple compromised links strongly suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160f1290e1f883---botuzuwukewinatevoziwugok.pdf In PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160722c39a1469---96108770210.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160c1958fdc6e6---57953997568.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c927559764---98782453483.pdfIn PDF document text
    • https://mimpishiodua.com/contents//files/96586101954.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c1e7fe7d4d---39254105003.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160942aa08667c---4595247876.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0ihqui9rsd13ug4179a3co8kp4/70580075193.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/ccbd1541d7e9830c9b5e1827b07e0320/78025955785.pdfIn PDF document text
    • http://cupta.org/userfiles/files/20210621123547.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/5urqqrtauo7076silhol06ujc5/votepevuzesaxujobaramun.pdfIn PDF document text
    • https://acryl-bg.com/userfiles/file/zojuvorurukibuforanug.pdfIn PDF document text
    • https://lienlacanien.com/img_pages/file/89736466946.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a46fce2e881---ragemukimuzojodonupe.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/6f75bc0299122dce6a23dfb9554963bd/93604652410.pdfIn PDF document text
    • http://wksx.top/images/userfiles/file/11692823724.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607169299a173---60388519173.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a2ea59dc94b---xuxifazoxi.pdfIn PDF document text
    • http://babamoleskine.com/files/file/21373925554.pdfIn PDF document text
    • https://247christianity.org/fckeditor/userfiles/file/gumalobowemozugowuruseb1621621254.pdfIn PDF document text
    • https://martensmgt.com/business_school/uploads/file/1533877452.pdfIn PDF document text
    • http://4bx.pl/public/file/40697808368.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=running+a+love+storyPDF 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7ED 18468 bytes
SHA-256: ae6f4f62f563df03e60e084d6982f729006c1deeef84bfbc5139d8b5041fc882
font_01_sfnt_off00012808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12808 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001401f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1401F 10608 bytes
SHA-256: ddddfd833f5ab65935f7f8930cf3cd14f6392eb1ab0720a20038a100401fd248

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