Malicious PDF — malware analysis report

Static analysis result for SHA-256 5632ade6ebbccbbb…

MALICIOUS

PDF

88.2 KB Created: 2021-08-04 14:24:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: bcd98be305ca3d02beab6ae22ebdb48a SHA-1: 97de38b91ce960c8973e919e537990648b6e1df5 SHA-256: 5632ade6ebbccbbb8829bc44b078036e9cc8d3b318344e718975f6c2cf182faa
156 Risk Score

Malware Insights

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

The PDF was flagged by ML and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many embedded URLs pointing to compromised CMS uploads and disposable hosting. While no scripts were explicitly extracted, the nature of PDF exploits often involves embedded JavaScript for malicious redirection or payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://amd-export.com/site/upload/file/11661134284.pdf In PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160787200448cf---sigovixajenavibogejam.pdfIn PDF document text
    • http://cuhs1981.com/clients/8/82/82ca37c076ec4232796cb58ed009bb3a/File/kozonenaninoxuzobukeru.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160712a32eec32---39447323868.pdfIn PDF document text
    • http://keiganproductions.com/clients/863431/File/tunivojifelabekekatutol.pdfIn PDF document text
    • http://esejsc.com/upload/files/82612728605.pdfIn PDF document text
    • http://xn----9sbbnbtte4cyg.xn--p1ai/ckfinder/userfiles/files/resab.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/pukulugalupurokelixakax.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/wegexuli.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/34949836233.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/000a44e54e35f965c0a32aa393dc21b3/xejuxitupufus.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/nigoli.pdfIn PDF document text
    • http://smsalumni1971.com/apadmin/uploads/userfiles/files/42210097118.pdfIn PDF document text
    • http://doks-films.com/pcms/content/file/vewiduxesiraxakudit.pdfIn PDF document text
    • http://campingwithconvenience.com/files/files/malojezusapofelavagi.pdfIn PDF document text
    • http://bettekingproductions.com/clients/874300/File/xuwepakudubuxadesavud.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/igtp9s0u4lccbcjfpb2ngl5gf7/86480855456.pdfIn PDF document text
    • http://ipublicity.cz/data/file/51091108489.pdfIn PDF document text
    • http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kitorazikum.pdfIn PDF document text
    • https://medarbindia.org/ckfinder/userfiles/files/70607695436.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e4cceedded9---jezavujulozesaxavafo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=fresco+play+html5+canvas+hands+on+answersPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/347ff8ca84a86dd24e395adcec19f075/gejuwopajugujuvebepel.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DA 17356 bytes
SHA-256: cc04334bd52931c231e0285084e2b560518df4062f9afbd0db5545b45ece4f1a
font_01_sfnt_off0001207c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1207C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13893 11064 bytes
SHA-256: 4c513c39eef2fa6929a1f74da5cd2e10432101ee125281e8988d97a820f574d0

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