Malicious PDF — malware analysis report

Static analysis result for SHA-256 9df195a8f9c27fe1…

MALICIOUS

PDF

76.2 KB Created: 2021-09-22 12:24:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4f32b836e3cc0e6477ac2f236d046edd SHA-1: 49634beebcf9ba640c51dc18f1411243b2be411f SHA-256: 9df195a8f9c27fe1872ff42c251919e994112bfaa54ed04f9ddf8983b790e33e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, forming a link farm. The presence of these links suggests the document's primary purpose is to redirect users to malicious content, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5631

Heuristics 5

  • 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
  • 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://garglob.ru/uplcv?utm_term=mupen64plus+ae+apk PDF link annotation
    • https://sgicorp.com/userfiles/files/gadolivikejizoles.pdfIn PDF document text
    • http://qataminational.com/uploaded_files/userfiles/files/giloxezuzomajesoga.pdfIn PDF document text
    • http://sewakendragroup.com/userfiles/file/rovexegur.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/161385c99631ed---84585456228.pdfIn PDF document text
    • https://chaletsuenodesol.de/files/88747136754.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/ccefb441f76c65b86856d01fc2555e83/bifuzomorudolufig.pdfIn PDF document text
    • http://phongthuydotho.vn/upload/files/37606046711.pdfIn PDF document text
    • http://galaxyjewel.cn/uploadfile/files/bupelufojonexebezezevip.pdfIn PDF document text
    • https://samoinstitute.mn/uploads/assets/file/zazibefijuxowilazuku.pdfIn PDF document text
    • http://mim2010.ru/userfiles/file/vegojusogefapepewize.pdfIn PDF document text
    • http://beiwendq.com/userfiles/file/81993019815.pdfIn PDF document text
    • https://veaodaibrahma.com/uploads/image/files/80353335215.pdfIn PDF document text
    • http://emilybarnes.com/DEVELOPMENT/VERSIONED/emilybarnes/trunk/sites/default/files/file/zogososexapebovazexiki.pdfIn PDF document text
    • https://baigiangtoanhoc.com/upload/files/tukebizofafadibelorexe.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/161453eb09e2fa---pinegedojesun.pdfIn PDF document text
    • http://nc-israel.ru/upload/files/vowiginagiwebepoxipif.pdfIn PDF document text
    • https://spa-salon.ru/ckfinder/userfiles/files/tonuvevimevozojazo.pdfIn PDF document text
    • http://nemochem.cn/upload/files/farubi.pdfIn PDF document text
    • http://palmdale.thepokeluau.com/uploads/files/53862993152.pdfIn PDF document text
    • http://clairvoyantinfotech.com/demo/images/nikosad.pdfIn PDF document text
    • https://opescom-store.com/uploads/FCK_files/file/buzedotijuneb.pdfIn PDF document text
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/qc0rre79e10uq11orlf6veugkh/58162199870.pdfIn PDF document text
    • https://millinerandassoc.com/files/file/88186627579.pdfIn PDF document text
    • http://trongtinpc.com/luutru/files/68874214570.pdfIn PDF document text
    • http://innova-perila.ru/upload/files/dubukevegixenulefik.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6A 10264 bytes
SHA-256: 3eb1fdb06c828446613cb03800f5d3402092bce16537b118b3f249c6eea3a9e1
font_01_sfnt_off0000f3b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1