Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee609f527985768…

MALICIOUS

PDF

74.6 KB Created: 2021-08-19 13:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: b02209f5a325076252ef755cdcc68f44 SHA-1: 9744b6da1a2920d73af4f5c11077f7ac7b34597c SHA-256: bee609f52798576884d85992f28b402bd60a01005827e5940b68ffd47bf88294
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://huntic.ru/uplcv?utm_term=yollar%C4%B1nda+yollar%C4%B1nda+g%C3%BCller+a%C3%A7m%C4%B1%C5%9F+ravzas%C4%B1nda+ilahi+s%C3%B6zleri PDF link annotation
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/c98e05633be4d1608d9947f6795ad4bd/xabagonizamuvivuwimoviri.pdfIn PDF document text
    • http://ptaki.info/imgekoprojekty/files/supakasixedeguzemoxadibep.pdfIn PDF document text
    • https://soechi.net/userfiles/file/gikapido.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/moxatepafug.pdfIn PDF document text
    • http://orderleesushi.com/uploads/files/naruvurofasupabomapa.pdfIn PDF document text
    • http://auroraenergyproject.it/userfiles/files/24857457108.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e108e52ce---52007158368.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb724f1deb---zafugopoxagedazudexokepu.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1607372f179263---61494898975.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e28c19ea54---67989649106.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/895a50535838ef0080720281827c1042/zavinomem.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/c435j7fj00q13g1k10bo72io1i/javotig.pdfIn PDF document text
    • http://samafb.org/uploadfilefiles/wupuxirexapobeloxuvigepe.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/2dd8d54b90acf57f61ffe852f9b19616/givuwesaxigotatotinowis.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/lkmi8jgau6df01ttq4kirtbcn7/69598585008.pdfIn PDF document text
    • http://kientrucnhacuagio.com/upload/files/zegot.pdfIn PDF document text
    • http://coumert.com/images/file/kirelupizetomu.pdfIn PDF document text
    • http://allycatering.com/userfiles/bizebefovuli.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609e0df37214c---fumarabul.pdfIn PDF document text
    • http://cariboohose.com/userfiles/file/rewegasurob.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/fbc19dh3mrr9p74fmkgpmokq82/tofodalutin.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f76d2c435a---62132447180.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_off0000bb7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB7C 18096 bytes
SHA-256: d59a93df5500571938cc5bb94860d2137e37d6108697d8840218987f7b9c60b2
font_01_sfnt_off0000e78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78D 11712 bytes
SHA-256: 19038c27a5fe79d1a7a1afe76562ce3a4deb4b6a78798610af04fa601a844344
font_02_sfnt_off000101c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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