Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe5174d30f10ee7…

MALICIOUS

PDF

89.5 KB Created: 2021-08-15 09:59:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 0515ccdb7dd201f790ececb5a4935ff4 SHA-1: 67fc32f23e9550ddb41668bedf488e469fd31ba0 SHA-256: fbe5174d30f10ee79010efd87fbaede6d69d457fbbae2ca387d8a50edc661266
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The document impersonates Amazon and contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing lure designed to harvest credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=mpow+h7+instructions.
  • 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://zohopin.com/calisma2/files/uploads/64261734872.pdf In PDF document text
    • http://envigest.cz/upload/file/suzivenezoputuworefo.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/2qctnhhkfkplh74pr057l2nr67/60782775147.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f99c5bd638---80241831574.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/915cd8791b5a04a910165c1b2ea2a3d3/92082630169.pdfIn PDF document text
    • https://bem-sa.com/img/file/81419129066.pdfIn PDF document text
    • https://bauarch.bg/files/lasodefap.pdfIn PDF document text
    • https://anyimaker.com/upload/users/files/95500856670.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/canql2qvipaupa8f1kilr0rtog/bexetaxagadawunefavuperu.pdfIn PDF document text
    • https://swalaya.in/userfiles/file/60670611459.pdfIn PDF document text
    • http://tplustech.com/images/ckeditor/files/6732697221.pdfIn PDF document text
    • http://hoggard1975.com/clients/a/a4/a43fc1111b7ad4318f8b553feb79a890/File/fuwobabaxutuni.pdfIn PDF document text
    • https://arerp.kr/data/file///laxijijetu.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/ae18604e56d3ba3c0c2486985a9980be/92693325846.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bcb7f7c8d17---gezilifuralunesasirupire.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/81548415795.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4be0a04a0a---32741176447.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/dg1booq8efhj9vsbgcpfopdsru/95843335169.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb7ae44054---95058279357.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/r49u2cu900bj3as35ugmfbq9am/98254508135.pdfIn PDF document text
    • https://mahae.hu/files/files/lavukubowibumowozo.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ecd42f0e7a---votebu.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/takixozuwufi.pdfIn PDF document text
    • http://toeicspeaking.net/_UploadFile/Images/file/tujimazivapovetavuza.pdfIn PDF document text
    • http://royal-pizza.eu/files/file/80367756241.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=mpow+h7+instructionsPDF link annotation
    • 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_off0000fa36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA36 10360 bytes
SHA-256: 3e62ba885d00ea0e465d8cad92a99b45d8aed469da1cc0c8bafab2dbee7e8965
font_01_sfnt_off000111b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000129cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129CB 18084 bytes
SHA-256: 0c520ac2b043f723c8d1a963d8423be3dc6813d02c8f4895010f5729c264737d

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