Malicious PDF — malware analysis report

Static analysis result for SHA-256 070ce0331d4b1355…

MALICIOUS

PDF

77.9 KB Created: 2021-09-02 19:45:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1947e6b60df2e843d2a6e19e6bed12a3 SHA-1: ebf295a2135df83618ca83e501a88acd7e151b10 SHA-256: 070ce0331d4b13551893a44bb41c208d941a023ade654c50495068ef15a893f5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of these links and the overall structure strongly suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9829

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crewmak.ru/uplcv?utm_term=koordinasi+adalah+pdf PDF link annotation
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/d8d4dbb60032edebb481bcd08d0adf49/nerovepepowuxopev.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/02892beeafe8e5496f94d92226f972ec/duzisimawibijabekogusi.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160c114e8a4210---kijenebefipurirajan.pdfIn PDF document text
    • http://cinebuzz.be/uploads/userfiles/files/44699997156.pdfIn PDF document text
    • http://bloomx.com/sites/all/sites/bloomx.com/files/kijit.pdfIn PDF document text
    • http://homelife-superstars.com/image/files/votinutefibinifa.pdfIn PDF document text
    • https://n-zvuk.ru/upload/file/37730628066.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16072c6cf3f727---rodiguvus.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/1d153749f3f792db282ab619f91a356f/9137672413.pdfIn PDF document text
    • http://chromavials.com/d/files/novisivowajumorixupe.pdfIn PDF document text
    • http://mcdanielz.eu/files/file/bixapiw.pdfIn PDF document text
    • http://windowsplusllc.com/ckfinder/userfiles/files/4415583968.pdfIn PDF document text
    • http://laser-piskovani.cz/democms/userfiles/file/zidepiro.pdfIn PDF document text
    • http://dailitara.lt/bites/uploads/file/lojatekam.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac65d663ea9---78554803528.pdfIn PDF document text
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/d8e94f63692a02794a8c61a508c129d2/78289357206.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/16072f45ee86a0---23437427376.pdfIn PDF document text
    • http://www.herbertvanderbrugghen.nl/draft/75686684955.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16079e59fe8032---97857316106.pdfIn PDF document text
    • https://airbays.com/userfiles/file/57108043753.pdfIn PDF document text
    • http://mazdooradda.com/userfiles/file/zusutufofusuge.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1609dfc565fb0d---sevuruguwel.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/91267669c0ba533e8dfa80a5818af288/goruberefimikulof.pdfIn PDF document text
    • http://pokorny-podlahy.cz/UserFiles/File/22058498829.pdfIn PDF document text
    • https://pharma-tools.eu/galeria/file/94619039823.pdfIn PDF document text
    • https://dnm.tw/uploads/files/202108200110287224.pdfIn PDF document text
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD258 10356 bytes
SHA-256: 2929f11cb8d2d4dea9bfe7f70a7a0b4e8759d541cd3489b8e6928c829fdb2231
font_01_sfnt_off0000e985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE985 15868 bytes
SHA-256: e923298c701c14af6b9e269232406103271e4362c59f950bc88cb1aa03473afd
font_02_sfnt_off00011210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11210 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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