Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbedfbad824c56f2…

MALICIOUS

PDF

85.4 KB Created: 2021-07-28 09:26:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: c8310c5db4acc442f56477e94073ef51 SHA-1: 99fe9da630276175ca358ac8e40b7fc637a120f3 SHA-256: fbedfbad824c56f2922a0d025af95f2d874929a94dc3bdf251990c451663966b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier. It contains a link farm hosted on multiple compromised WordPress sites, with URLs pointing to PDF files within 'super-forms' plugin upload directories. These links are likely intended to redirect users to malicious or phishing content, a common tactic for distributing malware or stealing credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/f8bbd94c93035f68f412734de8f0e14f/mosuxurufopuzun.pdf In PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/uqpmrp479lh8ni13dgko909mm4/gapimabozevaxazin.pdfIn PDF document text
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/9466c6f63710ad466f8b523e83b0fd16/40617277328.pdfIn PDF document text
    • http://kristenpell.com/userfiles/files/62076643225.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/8e0137348ce82de2e204b22f55019b43/rekeninamirejidulipufid.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb7802e569---zavolodo.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e83b1c0b6b---dufojewe.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/tilevowikivurariz.pdfIn PDF document text
    • https://bataretak.com/img/files/file/28166870781.pdfIn PDF document text
    • http://dolphinegypt.net/userfiles/file/76936409.pdfIn PDF document text
    • http://clubchic.lv/c/i/files/xujefapaxesugibuvodo.pdfIn PDF document text
    • https://beaszemin.com/files/94481982580.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609be87e21df4---fetawaxe.pdfIn PDF document text
    • https://samowar.ch/upload/file/11225319815.pdfIn PDF document text
    • http://toyteepee.com/uploadfiles/file/2105220118599087723gesru.pdfIn PDF document text
    • https://shoppingplanet.ro/ckfinder/userfiles/files/rudugexakogupo.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/aba01172f685e90b4d08ea512522a295/70981931237.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210726090021248.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/k4k25f36nskcp3pn7eipacfcst/fanifugerusasivawufotiso.pdfIn PDF document text
    • http://rogersdesignhouse.com/uploads/files/waxuvokox.pdfIn PDF document text
    • http://naitikfashions.com/ckfinder/userfiles/files/90969995026.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b680bd76b0c---salurexuzotuwotu.pdfIn PDF document text
    • http://stacjaregeneracja.pl/userfiles/file/68487039956.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=who+is+the+target+market+for+cosmeticsPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED69 15876 bytes
SHA-256: 424f55ff2b0f2c5cfe244cf2315208280ac3040263f1d6e02ef2c17c3da8fdf0
font_01_sfnt_off0001162a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1162A 10720 bytes
SHA-256: 65d1c2d49f1ddeacfb3170508af3b14d8c100b9e6c0597ae8a9e83c49b5e34c0
font_02_sfnt_off00012ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EE9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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