Malicious PDF — malware analysis report

Static analysis result for SHA-256 1325a6f778c6cd8b…

MALICIOUS

PDF

92.1 KB Created: 2021-07-04 01:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 74d2f068f158ff51354d82b996a08f64 SHA-1: 9fe1a35910b8f0b3a0645fbd9086978eb489a9be SHA-256: 1325a6f778c6cd8b126b71b9d294adb04d49146a9ca701bc7867d7146a416890
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a link farm pointing to numerous compromised websites, which in turn host other PDF files. The primary purpose appears to be redirecting users through a chain of compromised sites, likely to deliver a phishing lure or a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/putokukavesukewajunapukev.pdf In PDF document text
    • https://marwaautorepair.com/nbloom/fckuploads/file/52925900313.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/14863226443.pdfIn PDF document text
    • http://btfa.tw/upload/files/domupomubu.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ade444cbdcb---44085866254.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/d36qe2qik0hs35a40ohdp3i6on/3360902396.pdfIn PDF document text
    • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/261a3c3da64d24ca57f1482c80debe59/59776126759.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/f844aba03b37bda3ef4b3dbcb0723a51/18396784202.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/7907057a3e3e9fc5db9c83de288da653/fazegi.pdfIn PDF document text
    • http://thuduchouse.vn/pics/file/50829208321.pdfIn PDF document text
    • http://www.tiande-global.com/ckfinder/userfiles/files/60889236174.pdfIn PDF document text
    • http://chaitraglaze.com/uploads/87381892804.pdfIn PDF document text
    • http://orourkelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/60858613372.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/5dca350087f0dddef0752bd83827c1dd/xebegipojefabixiwofi.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/1050375231.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f51a0ca418---17646923100.pdfIn PDF document text
    • http://schokoladenfontaene.de/idata/39757826586.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddd40f669ae---xikodubulelasige.pdfIn PDF document text
    • http://starrsgazette.com/admin/images/file/54249279086.pdfIn PDF document text
    • http://osc-pribor.ru/products_pictures/file/porobaxefeno.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608618f933894---93006467162.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/72690194869.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=emmy+ann+wooding+picturePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD2 10928 bytes
SHA-256: 85f79bb22580926f2c2cde413aedc023b74f91e998b1cf53a54c19b8215c3b50
font_01_sfnt_off000105f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E0A 18016 bytes
SHA-256: e6465971b1e344000205db857246eb6a18b43f7f5f040d3face14eb464472f3d
font_03_sfnt_off00014ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CEB 16252 bytes
SHA-256: bfc7ce51a1a9b37382af61f0075eb0cdb972126da031002d338643432d80e6e4

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