Malicious PDF — malware analysis report

Static analysis result for SHA-256 29835d01a8334c1f…

MALICIOUS

PDF

403.6 KB Created: 2021-07-19 20:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 064f0af9902da039c90b6f83fc7cf9c6 SHA-1: 0f1faba0373fc6e177ad40269ee65b29f7a21157 SHA-256: 29835d01a8334c1f6c82ebafb48827dbb17d66622b2dcdcae83cc3df7a187811
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is a PDF document that contains numerous links to external websites, many of which are hosted on compromised WordPress sites. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to trick users into believing they will receive a prize or funds, which is a common tactic in advance-fee fraud. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9313

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • 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://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/28031d51d0ce6260ff0b19499337d796/lavutajunozom.pdf In PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/2e0e5ae09e9433523379ce9311c216b8/535153934.pdfIn PDF document text
    • http://mebco.ru/images/file/14237628179.pdfIn PDF document text
    • http://rydelko.pl/userfiles/file/16559581342.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081933112f58---julunovinerixuxap.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c38e2467860---dupofebut.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdb6cc7fee---ruwujuzezov.pdfIn PDF document text
    • http://doo-san.com/userfiles/file/20210704005210.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c99e20731f2---xulisonamaxiweja.pdfIn PDF document text
    • https://abugfreemind.com/userfiles/file/17630730908.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0897a967b---futovisurojorozi.pdfIn PDF document text
    • http://pcwenhua.com/uploadimg/file/162395174672644264.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16097e5a52aa4b---gabikedorulasa.pdfIn PDF document text
    • http://xn----7sbakn3aoflleitf3m6a.xn--p1ai/userfiles/file/daxanekatifemotaru.pdfIn PDF document text
    • http://furniture83.com/upload/files/lakagetafosoxezo.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2814c9db0---loxagazowijobew.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16096647587a7b---tanen.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e32da752f87---93556176738.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/370208a4bfd09d3771de051f43f81497/81711080259.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5245bb9e5b---tovefezisamenutonaju.pdfIn PDF document text
    • https://aydin-elektrik.com/resimler/files/89059336198.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16092d2d493562---lotukuk.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/06820f684b23505ac0b4a40dfea87639/18530649814.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/tugekisovavejovadarudu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=engineering+electromagnetics+9th+edition+solution+manual+pdfPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A398 2080 bytes
SHA-256: cda3405ee658e3196605dec6ff2914a565e5791567c0ba2d3172a579d108dc64
font_01_sfnt_off0005adb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADB9 25392 bytes
SHA-256: 609bb89754680e2b07a932d9422599e68d7f26753c78a41f6ddd1e69d5f12744
font_02_sfnt_off0005f374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F374 16336 bytes
SHA-256: 0ba07f6d54a4cb2ae74247f97c6a926e6d6308299df35fe3bea2e399aa3885da
font_03_sfnt_off000609ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609AD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off000621c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621C4 11316 bytes
SHA-256: d459d29d6faa37fc759aacc5e4577941c81f70260100a1df67b91b349fb30415

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