Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd3894c4ecc7d3e…

MALICIOUS

PDF

82.2 KB Created: 2021-07-01 19:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: a506a0f6bffe42ca9add1d391123bc8d SHA-1: 402844eab41f1db067d4047b663b5219c2507386 SHA-256: bdd3894c4ecc7d3e7043a56232a076714849de3c889696214d17634e73318ec1
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to various domains, some of which are hosted on compromised CMS platforms. This suggests an attempt to lure users to potentially malicious sites for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://fullmagicweekend.com/ckfinder/userfiles/files/fanitoxapepemag.pdf In PDF document text
    • http://asesorgubernamental.com/images/file/wusigijugokoloniwu.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/b44c646d6089b82d587f5425a73fa3aa/97334480166.pdfIn PDF document text
    • http://bscartridge.com/pic/24870214697.pdfIn PDF document text
    • https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/0013876ace4a0eac0b79691ff4cc7355/solarekojejaratopub.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/a5bcb826f9e2346f0ce92f75c5c6d1f7/livoji.pdfIn PDF document text
    • https://mecaniquekd.ca/upload/file/53014038602.pdfIn PDF document text
    • http://limitlessillusion.com/wp-content/plugins/super-forms/uploads/php/files/6d4101cf9028895a79fea5a5916a8ddb/55942397467.pdfIn PDF document text
    • http://www.iece.in/userfiles/file/fafinoba.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/ilp7te31pm2cud0at5bb87hvfs/furero.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/savaselalulejoraxozikuxe.pdfIn PDF document text
    • https://vishalahospitality.com/ckfinder/userfiles/files/55748735346.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608adc1d1eb11---maxowekezalapebeladige.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/14231010164.pdfIn PDF document text
    • http://alkanboya.com/files/file///pogojimizijarorexom.pdfIn PDF document text
    • http://primethailand.com/ckfinder/userfiles/files/variremafe.pdfIn PDF document text
    • http://songhandiban.com/uploadfile/file/2021061007165573499.pdfIn PDF document text
    • https://bnbcostaverde.it/userfiles/file/84251296274.pdfIn PDF document text
    • http://mobydick-band.de/fckdata/file/77677113482.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/fifisigazejew.pdfIn PDF document text
    • http://vejwun.cz/images/gonilesokij.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/a51hgc8mqe1fn9bk5j28kpul1v/wajofaxizetenovebojula.pdfIn PDF document text
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/f4191af76d0f8688f56110e84e68d869/wefajakisixevu.pdfIn PDF document text
    • https://transport-vehicules.fr/userfiles/file/35559623821.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/801c6b66acf9f9dd40093afbc4ab6d63/keriluk.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=mistral+air+conditioner+manual+mss25PDF 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_off0000de80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE80 10880 bytes
SHA-256: 7ce1a142fe1248fd47e9d68651539bb89a1f7c9d45a8075cf26bf76382e49fc6
font_01_sfnt_off0000f7be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BE 16768 bytes
SHA-256: ad0af31c1cecf63e232264611bae66c4674c97b4bd5a11115991b7455f2ef809
font_02_sfnt_off000122ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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