Malicious PDF — malware analysis report

Static analysis result for SHA-256 179af5d597a6cba2…

MALICIOUS

PDF

114.3 KB Created: 2021-06-28 04:04:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 8d606364a22a7c1fa9d0686cd2ccc126 SHA-1: 58e383eff06bdcd042a3b9b2f733e4a758576632 SHA-256: 179af5d597a6cba2a0e04829c853456edda719c72d3d9a5c50af90ab46643da9
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to domains associated with compromised WordPress installations or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://queure.ru/uplcv?utm_term=cheapest+beachfront+property+in+the+world+2019 PDF link annotation
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/0dmg67g618uhc982092n9eoq0r/78055124685.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/mafanofevuxugevazemareb.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/xomofemitibe.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6c535cfdf---10121662297.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/2be60174e5414a339eb1b1dae2233258/19300082017.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f12efcffd4---sewivudalamuvibirefi.pdfIn PDF document text
    • http://18554080.com/userfiles/file/dapikunev.pdfIn PDF document text
    • http://www.monts.sk/upload_images/file/23387363314.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5842039fdf---givinisubiviv.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/30900920099.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/mqgv7idbhtsfq2n8bh6pps8vp3/337307658.pdfIn PDF document text
    • http://project-st.ru/userfiles/file/84450275622.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/87994702480.pdfIn PDF document text
    • https://nic-irq.com/userfiles/files/zitivalejeminij.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/7q0gl8ufqfpasoch63a12bom9s/refurakodubes.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/48566092364445db8ae8b6d2d46a3911/45605073162.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/im41c72smvqesvr70ve2g0922b/tepakibezileviburapodik.pdfIn PDF document text
    • http://bkht.vn/userfiles/file/64366891409.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/bac46d126ebb923d6cfbd2d36f2466bd/42700156074.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c388b3bde6b---todafo.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d90144005e7---dosugavijoz.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad4cece4a29---majinekumu.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/33367012540.pdfIn 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

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_off000159bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159BC 11552 bytes
SHA-256: c2f280f6c7be3874ab90c01fd9bc106e915be764a892d162a5cd60722bc9e421
font_01_sfnt_off00017507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17507 17688 bytes
SHA-256: 378ca9aaef8c7b3be7d0c31e6d06e718a4275c907d92c420fd15e0627133fcd8
font_02_sfnt_off0001a384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A384 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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