Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd4055c25db0ee5…

MALICIOUS

PDF

81.7 KB Created: 2021-09-04 22:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e53566e492fda1766fc13c6d2a166679 SHA-1: 8f1da6eb66a405b4712c6a09368cdeb67ba4b89f SHA-256: 0dd4055c25db0ee5f8168bac5552e7b5ac759426d05cbab70c690dbbbe526e9f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://pistant.ru/uplcv?utm_term=15+finance+commission+pdf PDF link annotation
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608491e8099b1---surijafix.pdfIn PDF document text
    • http://liyangah.com/Upload/file/fotesig.pdfIn PDF document text
    • http://grotech.in/userfiles/file/bolepuzijevif.pdfIn PDF document text
    • http://potentialdesign.cn/userfiles/file/1628518207.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/ab715837eb2f226cb57098d34d8971de/76111297285.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/280258192581.pdfIn PDF document text
    • http://se-ty.ru/uploads/userfiles/file/17339164332.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ad048e116---namoxegawo.pdfIn PDF document text
    • http://fzcce.com/aimgs/uload/files/vinuxulilalanaf.pdfIn PDF document text
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210624103816.pdfIn PDF document text
    • http://fskyok.com/uploadfile/files/vupozomokidazor.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/eaj7omristtqig6oh0gm2fjcmi/jaregajawuwekopefijifera.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/77agupmqp51geikqlcs53ngnq7/tuxusolepinusofuva.pdfIn PDF document text
    • http://pajurioverslas.lt/ckfinder/userfiles/files/gawagakifaxasatazo.pdfIn PDF document text
    • https://loyallcanada.ca/editor_files/file/mavez.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078128eecd24---47427990336.pdfIn PDF document text
    • http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/npm6mr8jtaolj4gqhf2p5or47n/33307454212.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fdced288c9a---42330444405.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c43226c72---xusosizezefuwunubimusum.pdfIn PDF document text
    • http://fleshlight-tw.com/userfiles/file/33770265250.pdfIn PDF document text
    • http://shs67classreunion.com/clients/b/bf/bf9552935413f2527bbee995f2dfc9b5/File/66230622907.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be4dbad11b0---64798485329.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021062403543599.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_off0000da88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA88 10624 bytes
SHA-256: 4258313b70b2d324755458a50be4a60fd514c890267e6688054d01cc21ab9295
font_01_sfnt_off0000f2cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CF 17876 bytes
SHA-256: a9d8ab124da7b78fe90eb38c3e8608b918ec4ca7e060e5e884d3609abb6455af
font_02_sfnt_off0001213a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1213A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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