Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc95674af76230e1…

MALICIOUS

PDF

94.3 KB Created: 2021-08-08 00:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 9b59f5f3aa8d708d17c8de14b2c910f7 SHA-1: 3341ff3f5549729f7cf714dfdf7f3db31257f749 SHA-256: fc95674af76230e18acf8f834d6353a694b82a1e2e0ea3140bd294ec748e9d6a
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which are hosted on compromised CMS uploads or disposable domains, suggesting an attempt to redirect users to malicious content. The ML classifier strongly indicates malicious intent, and the presence of external URIs points towards a downloader or redirector pattern. No scripts were extracted, but the overall structure and heuristic firings suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://dacsanmyhuongbeti.com/app/webroot/files/images/pages/files/tegulepiworeritudetolebij.pdf In PDF document text
    • http://dachastyle.com/userfiles/file/gefuranuzaz.pdfIn PDF document text
    • http://artistalexanderkanevskywinnerinternationalaward.com/clientMedia/file/89234775177.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160bce7c951abe---gonubinulopetodofab.pdfIn PDF document text
    • http://www.vljainandco.com/userfiles/files/sogetibosasimaboxape.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/54801839f9dcdedbb0c912cecb783e88/vajasusazaxodijuwufukunom.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/d02cf3881524bd7f44c63e00919488cd/21402465595.pdfIn PDF document text
    • http://thuduchouse.vn/pics/file/davoxijelimomototejof.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/dbt9u6gqecirh877i1vmr7da24/88327691860.pdfIn PDF document text
    • http://tygodnikzuzlowy.pl/ckfinder/userfiles/files/lajok.pdfIn PDF document text
    • http://optimumnieruchomosci.pl/uploads/userfiles/files/74976927313.pdfIn PDF document text
    • https://gites-les-bardots.com/userfiles/file/mipexuzewox.pdfIn PDF document text
    • http://remaining-mc.de/userfiles/file/lezexojesepexizivifug.pdfIn PDF document text
    • https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/761f5df0b744c603f0f7deba5dbc5944/64999265527.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/86495095576.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/dekam.pdfIn PDF document text
    • http://rogalafamilyreunion.org/clients/0/0d/0db8e8e54aa701f14f52e26b989c21c2/File/xeselatebasegabegiwutubuv.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3ef9eab0a---4002120056.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16093f3601ecdc---kafoguvosufebaguradijod.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/1s1a033nbsc1d8h0o7p1okmao3/95248367511.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b74dc4859e1---soxawapelaxisavajagin.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/619449e545e7d4d8a97638108b98afb1/dalegagufepiguzof.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba96ca60154---lepefapejobebefilomagur.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=2020+kawasaki+zx6r+owners+manualPDF link annotation
    • https://medlineplus.gov/kawasakidisease.htmlIn 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_off00010dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC6 16744 bytes
SHA-256: ef3d5046af1b0fab4c7e58404f01219767c5fb7001336303be50e2d9c8778b55
font_01_sfnt_off0001395f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1395F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15176 10924 bytes
SHA-256: b2453158435e5e03f81fa26d9b3c95a823f53e5123de36f5d27bce3d5669a411

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