Malicious PDF — malware analysis report

Static analysis result for SHA-256 d012b6aa429a4288…

MALICIOUS

PDF

115.3 KB Created: 2021-07-07 19:30:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 10057757d407a47013773b76152b61c5 SHA-1: 38e118d23291108d2568861a82ae44a551ced860 SHA-256: d012b6aa429a428805eca561b11287bb1d43f91c4f17baccf4bc5e5f5253e8c7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9666

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 http://charugarware.com/DEVELOPMENT/charu_garware/uploaded/userfiles/file/vujokadixapomalevodewopan.pdf
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/1089dd7b01d893f5acd1ff9aec65ff66/pevitawebegawubip.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16093fea54a9ab---fixerimepesenibipali.pdf
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/j7blblp2gr90ov5oqlfhjoi9u3/foxerilak.pdf
    • http://angelescare.com/userfiles/file/tipinitopilebugobo.pdf
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/2f7679631ad52389708257a79ae87c60/1646251481.pdf
    • https://tese.in/ckfinder/userfiles/files/35593305821.pdf
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/10fb879ed6eb7a64bd80e0d9109e1804/83513779794.pdf
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/48406881ac98fee9af2ed39732485dce/vodarijavudibiwopalutof.pdf
    • http://k-yoga.org/file_upload/spaw_upload/file/20210704183715.pdf
    • http://tauben-buchmeier.de/kleinberliner-schuetzen/userfiles/files/tirajosukegerotojexoj.pdf
    • http://sehs67.com/clients/e/e0/e078d4d0076166a7bb489ca3b3a583ab/File/5443291060.pdf
    • http://sun-green.be/ckfinder/userfiles/files/30609683089.pdf
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/28a130cce07e3ff8e1075ece6354ee59/zuzalexexo.pdf
    • https://hoangnhataudio.vn/media/files/11123402285.pdf
    • https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071b42e588bf---56697288361.pdf
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160e1d761b957f---burumuzuv.pdf
    • http://nsfeed.com/_UploadFile/Images/file/52797195225.pdf
    • https://dgaspcsm.ro/ckfinder/userfiles/files/wonogakuvavawuzadewukimu.pdf
    • https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/76b69ed81961c66856b8f35fca80fabc/20024900607.pdf
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160c8501cbe2ed---45597920763.pdf
    • https://supermagnum-bg.com/userfiles/file/woxonuwegepetunifufenavu.pdf
    • http://bukharageorgia.com/sites/default/files/file/42991343590.pdf
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080c30406ff9---26384256589.pdf
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/0aoggr0k61dgn80kb10q989clj/10875743632.pdf
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071e6a67215f---vezezusebewumokusezelo.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=cane+from+the+bible
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000175ac.bin
603b4527d85a2e410b8006c554070649a993ad86e2ba589592b3f68537f33014
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x175AC 17404 bytes
font_00_sfnt_off000143aa.bin
fdc9e01407440f5cfe39a5c5fb07fa9ada8c8b9f0a88b2bd37fdfb3972d2a26a
pdf-font-stream PDF embedded font (sfnt) at offset 0x143AA 19260 bytes
font_02_sfnt_off00018fdb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x18FDB 16792 bytes
font_03_sfnt_off0001a7f2.bin
cd42e53c5a462a3d29921a4daab55fff3b64e66d533e44b7cba114574ed473cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7F2 10480 bytes