Malicious PDF — malware analysis report

Static analysis result for SHA-256 862e6742c8fa3548…

MALICIOUS

PDF

85.0 KB Created: 2021-06-28 07:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 1613717c6b855af492f4ecada6d6cd75 SHA-1: 1d30c22310fedf31543b0780f240e706dae7b3c6 SHA-256: 862e6742c8fa354894872a91d806d7289a1326eb8e6971a607ec7a968183ba7a
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier with high confidence. It contains a link farm pointing to multiple distinct hosts, many of which appear to be compromised WordPress sites. The primary purpose seems to be redirecting users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/2d2ef6f7f78564064e8a401f8c61488e/74459097586.pdf In PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/d05349b9c52234b69e3f34f151e06788/loxodowawusujabaterofon.pdfIn PDF document text
    • http://kondicionery-dolgoprudny.ru/upload_picture/file/tupejiraradodaxojefodo.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/2b2893d75c907bb75af9c5b7e092b18f/tukelesiwosonaxo.pdfIn PDF document text
    • https://chetanaus.org/bheru/uploadfiles/file/16044987826.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf9ad6d4840---puzixetoboza.pdfIn PDF document text
    • https://www.groupenahno.com/wp-content/plugins/super-forms/uploads/php/files/dchkstrekpopoup51ofrccl7al/meviremigumigeka.pdfIn PDF document text
    • http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/1262655304.pdfIn PDF document text
    • http://atthaya.com/file_media/file_image/file/mumagevu.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add70a1d08f---30104627172.pdfIn PDF document text
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/1e6d26c225529fcc7c02e9be63c2254b/jutopipukeboxedudosu.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/7gmqjhjge4hb91hiabsf37f770/rezovovigudubisuzaxevuwi.pdfIn PDF document text
    • http://xn--l3chcucnqd9c0eua7b1k.com/user_img/files/wikijakuted.pdfIn PDF document text
    • http://pwmtqatar.net/userfiles/file/kudasiwukegutema.pdfIn PDF document text
    • http://cngwalk.com/fckeditor/userfiles/image/74637558035.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/47512881025.pdfIn PDF document text
    • https://marigabung.com/contents//files/fozepolajuwigoniwupu.pdfIn PDF document text
    • https://diphong.com/uploads/63114812801.pdfIn PDF document text
    • https://travelinnsuites.com/nbloom/fckuploads/file/lenivaxubesug.pdfIn PDF document text
    • http://oryginalnedekoracje.pl/userfiles/file/sefowuxewodumevojubi.pdfIn PDF document text
    • http://mobydick-band.de/fckdata/file/xikakaguruvukizidas.pdfIn PDF document text
    • http://sahamit.net/userfiles/file/20633885817.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=fresh+start+love+quotesPDF 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_off0000ec4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4B 10300 bytes
SHA-256: 36446cbf502845e7c1e375628f30639c00ba30ba0aa5b0f462e4c4f9cb400e24
font_01_sfnt_off000103b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B3 16680 bytes
SHA-256: e7c24c2755083638d96869c822af3555d3016d899bcc50ca045cf4440d2b9b2c
font_02_sfnt_off00012ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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