Malicious PDF — malware analysis report

Static analysis result for SHA-256 0163f9dbf0fb87f9…

MALICIOUS

PDF

83.5 KB Created: 2021-07-05 10:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 24f12c877dd22cbc809eb8c87dd87f60 SHA-1: 091cd2caa762cd83fceb98c71f84c7a3a8eba18f SHA-256: 0163f9dbf0fb87f9011d79ec6061f01cb5f9ffa789132309ea1f2be0e1207101
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or malware distribution lure. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting, likely to redirect users to malicious content. The document body is heavily obfuscated and unreadable, providing no direct user-facing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://elmaga.lt/components/com_mijoshop/opencart/image/data/files/98543437134.pdf
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/7ee82b68848654c6f08cbd6808adfe0c/sapazalajologuravax.pdf
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/dkijvhhfp0vhq552n5tk0s390e/40090614581.pdf
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160b43748ebc81---mudonoxokufalerik.pdf
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/9hgbudu95b1hj76l7kj8iakdco/dujikiwesaxutusu.pdf
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609823c10e5a8---genarolomotekamot.pdf
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608cab38be7ad---98976418638.pdf
    • http://unicorn-furnitures.com/d/files/60440931866.pdf
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc7f4688b5---zafasaravuvo.pdf
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160872d814723f---kasanefisigojadabelaxesa.pdf
    • http://globalsocialwlefaresummit.com//app/webroot/uploads/ckuploads/files/77295203836.pdf
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/54faca8d9d787a5bdbecc8193aa5e2f4/telazobagepizi.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/ii40ifhit3ukrb4u4e86li6d06/25791041345.pdf
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/jkm325rd3jgqvgnp4k3tus1t1f/jazekikave.pdf
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160746e72e4679---xawibuxuxekozedumifemetif.pdf
    • http://wowbond.com/upload/Fckeditor/file/32403244623.pdf
    • http://e-hane.com/files/68401069797.pdf
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/74559eb59f3e44d896868ee7d734ebbe/fajufanubum.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5f400664e---wakunuboluripajanufobej.pdf
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607acffe90e81---nilujatukiveror.pdf
    • https://sport-jicin.cz/dokumenty/narifagewuzuzur.pdf
    • http://aitrans.org/UploadFile/file/F1202106280412029524.pdf
    • https://506hlapeta.com/files/file/76625466472.pdf
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b595a6ba126---96628458149.pdf
    • http://crescentcarpets.com/userfiles/file/fikupuwokazujefosukadex.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=in+the+tall+grass
    • 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_off0000e813.bin
e651e90bcf8e5669ec6c809d8cf560b42dc027949e1e529a7ef6639462b0bdf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE813 10128 bytes
font_01_sfnt_off0000fe9e.bin
386cd7f7ed413a9e4ead55e612936a88ac8c770efcdffd366a01b1d20748528f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9E 16344 bytes
font_02_sfnt_off000128d4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128D4 16792 bytes

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