Malicious PDF — malware analysis report

Static analysis result for SHA-256 93a17b0ac663ea27…

MALICIOUS

PDF

70.9 KB Created: 2021-07-09 00:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 2eda53761c3a2e48c9b80b66b17b55e1 SHA-1: 955b8580ef3a1f102544de616c4b814b891f0f00 SHA-256: 93a17b0ac663ea279fd77316d37d7bdf7a646616d3f57c3aff6f3bb9b61623e9
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many hosted on compromised WordPress sites or disposable domains, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to malicious content or exploit vulnerabilities. No scripts were extracted, but the structure and embedded URLs point to a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6630

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 http://www.smartlandgroup.com//ckfinder/userfiles/files/xitijiwetobutuguvozu.pdf In PDF document text
    • http://ingmontagna.com/userfiles/files/16317982090.pdfIn PDF document text
    • http://come2menorca.com/images/file/ravakebujepafo.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160838ad8b034d---95753097494.pdfIn PDF document text
    • http://cn-noah.com/uploadfile/file/xetaxovazikanorujude.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/mjq6d32mugsb8duo6au37k4jh3/79405792082.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/b104b99ed4249876a22abe0ef4bc48ba/54345503731.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb40a64a98---salideviki.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cb6b3a9d0---38434171714.pdfIn PDF document text
    • https://1877painters.com/FCKeditor/file/ligurajebisenus.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/08gdl4rfh1qb12msrpcpl48duk/gobefibeji.pdfIn PDF document text
    • http://geniuschulatutor.com/userfiles/files/68775721402.pdfIn PDF document text
    • http://1mosref.ru/ckfinder/userfiles/files/87915856238.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b074b41e753---53023795379.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090b6bd0ea10---fazetiwetadikoxatogidi.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/d2ae2c5968a74542bd0340d73fa90922/xelakuw.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160bba10c085ee---dudojawotedaxesuvep.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/t39hmhdb579u0ettcpadertina/jegedevagimukizuwis.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a52132741f3---betex.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f4a9d594c---rezidixovepukeza.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/9a1f20af7b01a707e406a9760bcbde77/visapivewizamovedavakol.pdfIn PDF document text
    • https://clearpatth.com/userfiles/file/13466950540.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/5mkc94tmuk5dqkcnpu3uvmllc7/tolofefizowural.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607238f1ee814---jewujagawuvi.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/49467880192.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=why+did+you+conduct+this+research+answerPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f28c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1