Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebea4a6f3111f2c6…

MALICIOUS

PDF

72.7 KB Created: 2021-10-05 19:22:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 4f28827d633ac2f7e079910ed2e162e7 SHA-1: d816bacce8ec695d02fd26906a04b7a6167c805c SHA-256: ebea4a6f3111f2c6eb97eb90aca080ae75a35b1048edd66a80aa0d94b2c07321
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many hosted on compromised CMS upload storage or disposable domains, suggesting a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious redirection, potentially leveraging embedded JavaScript for obfuscation or further actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://irlanc.ru/uplcv?utm_term=the+parable+of+the+pipeline+pdf+free+download PDF link annotation
    • http://atanasijornet.net/uploads/ckfinder/files/pawevoteferatovonufof.pdfIn PDF document text
    • http://fuerst-architects.com/uploads/file/dabalolid.pdfIn PDF document text
    • http://dycelife.com/userfiles/file/22247858532.pdfIn PDF document text
    • http://mariancozma.com/_user/file/99129369526.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/sozus.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/b99b601d7da2a1ce5231c73140a156a4/31449106214.pdfIn PDF document text
    • http://njchemland.com/upload/files/35983713506.pdfIn PDF document text
    • https://tidurmalam.com/contents/files/67066072048.pdfIn PDF document text
    • http://kingtonkatsu.com/uploads/files/jixabavuram.pdfIn PDF document text
    • http://tingchucontrol.com/Uploadfiles/files/2632434004.pdfIn PDF document text
    • http://jfac.kr/ckfinder/userfiles/files/1458631641.pdfIn PDF document text
    • https://aaaxxion.info/images/file/silojebileg.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/debamir.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/d922cd7dab11bcbd487d3b2c13390c35/20202542452.pdfIn PDF document text
    • http://teusz.pl/UserFiles/file/69584208370.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/f1151917b0daef426f7a211ea6ef2106/81376858648.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/51554167010.pdfIn PDF document text
    • http://fortwashington.abwingsmd.com/uploads/files/sedogepopogira.pdfIn PDF document text
    • http://tahyuh.com/uploads/files/202109290122128762.pdfIn PDF document text
    • http://softtox.com/new/userfiles/file/64068594811.pdfIn PDF document text
    • http://baodieptailor.com/uploads/2021-09-28/images/files/senipevaxamimawiz.pdfIn PDF document text
    • https://sherwoodchamber.org/ckfinder/userfiles/files/mosusasos.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_off0000b8a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A0 17332 bytes
SHA-256: 541639680b447f4522bbb6204bdc5c26c35109fa70c5c515610e91dae68c5abf
font_01_sfnt_off0000e52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52A 10616 bytes
SHA-256: 68a8d7ca4a178b95d1eb85ddfd56c6342395bd903aef412d9fae65f1d2f02c04
font_02_sfnt_off0000fd2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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