Malicious PDF — malware analysis report

Static analysis result for SHA-256 7afdbd1358825f3b…

MALICIOUS

PDF

90.6 KB Created: 2021-07-30 22:02:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 0737655f133cc768660520d2e0811f45 SHA-1: fbb2dae6e4b45a1b707a0ef3074e0288392e70e3 SHA-256: 7afdbd1358825f3b08f5e6e8f30ed658f54465d42b10584e867f448b70c12599
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous external links, many of which point to compromised WordPress upload directories, suggesting a phishing or malware distribution lure. The primary attack pattern involves directing users to potentially malicious content hosted on various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 https://jxloanchien.com/style/postimage/file/6853546952.pdf In PDF document text
    • http://matchedtubes.de/userfiles/file/72061165978.pdfIn PDF document text
    • http://bigband-ulm.de/userfiles/files/33857239592.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/c04kboqr4tsnpscvf7gg51usfv/laloxesivibak.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fc5fda11da---6563600391.pdfIn PDF document text
    • https://total-sport.pl/img/upload/files/wevakepa.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/938038f29c35eb306a269febcd0b1a74/7603840124.pdfIn PDF document text
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/79f7da674326a4577c2c75a14f33ea9b/jovupawomakuviwi.pdfIn PDF document text
    • http://sassyissy.com/survey/userfiles/files/82906765449.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608a67548e8ab---99903800971.pdfIn PDF document text
    • http://smartvoicecom.com/userfiles/bokevofisojodajovisupeti.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608181eb4d1c0---bajegubot.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/0575370c8cd838aee43c4bcd92d06a9d/rakirujunogakamulo.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/0efd2b8acd85aeb7f5d23e0d8fbfa39e/widuru.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/3e488ebef4a1289eeef24a4e4137d577/muwomujomemanozem.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160be38cd62417---49219760200.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a8732e40b86---72447427235.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097460e0ca5b---welilidovojisoruv.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b390157f3f9---85781963110.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/1ea0d0fe3f8c5097d22a427849219677/64675738223.pdfIn PDF document text
    • http://ecologie-energie.com/userfiles/file/nunawexajofeg.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea263efe3a---rivizatotufasusumarajelol.pdfIn PDF document text
    • https://triptoboloyfoundation.org/editorsfiles/files/mebenas.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=audesirk+biolog%C3%ADa+la+vida+en+la+tierra+10+edici%C3%B3n+pdfPDF 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

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_off0000f0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F5 20892 bytes
SHA-256: 1250cfe05828b59dc008038ea2361bc7f1ded45829c4c0cae8aca9ae237ee92f
font_01_sfnt_off00012662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12662 11548 bytes
SHA-256: f2ec73d3fc6bd744c5d9296573aa596cb7c68297e0cb162c4a4cfe15cd704ca5
font_02_sfnt_off00014143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14143 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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