Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e97fee057843d0…

MALICIOUS

PDF

83.9 KB Created: 2021-06-28 07:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 5642ae648bc011b650013bda1181b489 SHA-1: 7f82747166480191a19d89651510009f8cd772e8 SHA-256: 69e97fee057843d02dacaf90ba58caa59027a93ed539d831ee29502f2d293d41
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many hosted on compromised or disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites. No scripts were extracted, but the overall structure and URL patterns are consistent with malware distribution or phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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=libby+for+windows PDF link annotation
    • http://allmedicus.com/userfiles/file/mivofamaxipunojad.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20210430104633114.pdfIn PDF document text
    • https://dbmotorbrokers.com/userfiles/file/32956360061.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/7098964f94a95796f25d9421ded217e6/96782032974.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab0b09d386---4407978296.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/alh1v3o6vka4kbo207kupiklc4/4989490475.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606c78cf8291d---12841649168.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/vijomefogufow.pdfIn PDF document text
    • http://train-in-japan.com/images/blog//file/juxivuzenaturewetudusezu.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/fe87b79821be96bdbe78708c76ada69a/95467665329.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c928c5c080---vokalatusuvunibuweveb.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c68e771c7c0---72047578218.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/12157800219.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160824f5996ef7---kekoronifaba.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16088437c3ad8f---55899546034.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/ept60iu7ne0g6m9gddm1p3peg5/39558138629.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/aipv8spq0m6bd5t29tk4lrto75/97295171304.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/54055143897.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/13a3ed66c4770d705cf1061aa4712e93/97451831298.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/7f0a8506bdb7edd4b0abf7a49e7be6ba/famaxokamilezunare.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/tm3k2k0rfcodlb9lsmvsjaeu87/83099188919.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/208872fa30fcdefdbb3c5fada2011f23/54183032219.pdfIn PDF document text
    • http://pttaccounting.com/userfiles/files/51440061504.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_off0000e696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE696 10204 bytes
SHA-256: de3945bb66ac8cb43edae6f7a6662b1483f7c3fbaea5e71d4bdf1bce9480876a
font_01_sfnt_off0000fd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD94 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000115a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A6 17168 bytes
SHA-256: 24696c5b6773cd9f1123c9ae4050c65fd82cc05c4ab846225c6bc48a53f3d300

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