Malicious PDF — malware analysis report

Static analysis result for SHA-256 380ad672a15bbf6d…

MALICIOUS

PDF

179.3 KB Created: 2021-06-27 08:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: af9b60fdb38e315b8a39356660c08880 SHA-1: ea967f4c7895afdb6bef9a22256211b52ee44be1 SHA-256: 380ad672a15bbf6dffde5a3276e791e0f33941404930469deabc3b6e6c493e68
156 Risk Score

Malware Insights

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

The PDF was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites that host further PDF files. This suggests a multi-stage attack designed to lure users into downloading malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609680d2673b3---78252914555.pdf In PDF document text
    • http://ahxxzx.com/userfiles/202104/file/norikavelomarabu.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af7fba4d112---38301172406.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/26304327107.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/7f34ceec453c46b055cbca927e159e91/rirumol.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/e98d9db284ba4be6e8598ab79bdba100/62541386525.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/afh3fen5mv21d2sg1u7kfl6ki1/33574605708.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081f68267d63---pisubezi.pdfIn PDF document text
    • http://pulsarvn.com/media/ftp/file/28068159811.pdfIn PDF document text
    • http://mispuntossaga.com/campannas/file/79343104090.pdfIn PDF document text
    • http://tumwebthailand.com/ckfinder/userfiles/files/xibopurew.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/5ruih9h1tp3vu0hp73rtd9pb3b/wumirisalodakudeje.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/majusukibefidez.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/fd2415aace6ef49e1d4f5ec8788a5842/roduna.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/047198263dc9745865cf7b27fc4c979d/90175688159.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/2bbb35645f58483f45c62f10e2be1561/44737967039.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609a362aeadc9---46207741427.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c2827c137d---50907598125.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/70477397395.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/f4969e8942ed26a70cf5c4619f28bbf4/sudawalatase.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/71691174984dd6e8e2620671aea37005/puxomudakogij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=phd+research+workPDF 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_off0002640f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2640F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00027c21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27C21 16984 bytes
SHA-256: b7373b5d1c069698517a63a8ece933a36bb9de25af14bf50b5bc44227f09363f
font_02_sfnt_off0002a83e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A83E 10304 bytes
SHA-256: d9540ca9e0ecdc2975a37b027dda6fc1d90a998cfcaae92b14be4ebf77edf805

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