Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ec3fcaaa086641…

MALICIOUS

PDF

88.3 KB Created: 2021-07-22 00:06:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b4a85469258f9b41a1f193935c4861c1 SHA-1: 3510a203e5431ec74a918ffda287202e8914cedf SHA-256: 24ec3fcaaa086641a15415a553c792b86ef62ece41dc351e5b0746fce51f51a9
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing numerous links, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm used for phishing or malware distribution. The 'SE_URGENCY_LURE' heuristic indicates the document likely employs urgency tactics to prompt user interaction. While no scripts were directly extracted, the PDF structure and link farm heuristics strongly suggest an attempt to redirect users to malicious content, potentially leveraging embedded JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 http://hoanggiaphatland.com/uploads/image/files/gawalunaluvurevoranus.pdf
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0d7301ac23e492c99d44d0ac0003a53a/15978801480.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e0dea3ecb7---96704699816.pdf
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b77ac0a58e---29702508092.pdf
    • https://fenicia.uy/fenicia.com.uy/uploads/files/raxugawejeputanetu.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/9em3ve78krija6kkfh1maj8466/junagidibumobusebejefapoz.pdf
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/c50fd1141e976fec566258137755d207/faluxedevetubinazamexoj.pdf
    • https://tolgyesvolgy.hu/userfiles/file/59110333610.pdf
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/tieg31baq86o14pp73g3fhrf41/funubalokofaxanur.pdf
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160724ccb01c58---wagenopul.pdf
    • http://mtecommerce.it/public/news/file/duxijixukapusesejis.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a73113e06369eb52b3f304c9e8d5ef43/xosolapi.pdf
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/02516beb15716e7b8a1dbd00d41ff552/2535754907.pdf
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf9dcf63020---lamekekukabuve.pdf
    • https://sabagdasarov.ru/upload/file/56378099060.pdf
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/3srmgvffcrjk79beu2cr290gu9/bilodomafatuf.pdf
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d38663e255---befupux.pdf
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf23b9035b0---14874476449.pdf
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/b83127240db67add37ff9628b21b2212/77604424781.pdf
    • http://ipmarketing.net/userfiles/file/gepejopijefulozevulidef.pdf
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9dc359c85d---16756160926.pdf
    • http://quangcaosms.org/media/ftp/file/mozewojedujax.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/3rvpo9ss7dms7s0ru3r1gun4l3/gexokikefuxasir.pdf
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/6ksk3ncbc8bpb0e0ln3d1fjo68/fufezuwu.pdf
    • https://immobilgold.com/file/71559108195.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=the+contortionist+return+to+earth+lyrics
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edb6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB6 16792 bytes
font_01_sfnt_off000105c8.bin
ede542bb59ef8288ad707a9c5be8a0747d5ad12d77056237654d9153053d52e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105C8 21280 bytes
font_02_sfnt_off0001392b.bin
cad50cbd40898ebd16943b2f4747e30101423fbd22ba275ea13c873d1d8ed98d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1392B 10504 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.