Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3008a889ec1430f…

MALICIOUS

PDF

96.9 KB Created: 2021-08-07 02:36:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 405a4556d260e381d79420670b82fb77 SHA-1: ef4ca0a7ef0c0e4277427b15f0b0a31d6212be5f SHA-256: d3008a889ec1430f26eb8525c382afd51c9ab99011e2516940b86fedb20b67ba
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure indicate an attempt to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/15aada854e9e5841ac2eca7f417d60f5/7185863032.pdf In PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606ec5a80eced---putobemifiz.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/64105219653.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c253274c18b---pigijatamadonomudulezod.pdfIn PDF document text
    • http://lyjclinic.com/ckupload/files/46364454336.pdfIn PDF document text
    • http://futurepoolandspa.com/ckfinder/userfiles/files/zisativubemasalij.pdfIn PDF document text
    • https://ferado.vn/userfiles/file/taviv.pdfIn PDF document text
    • http://meandnetworking.com/ckfinder/userfiles/files/motazafatexovizejojiwa.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/8t9j861p5a252cn51tllrd77d0/48676733318.pdfIn PDF document text
    • https://ukmalayalamnews.com/userfiles/file/77717690522.pdfIn PDF document text
    • https://safrano.pl/userfiles/file/20247448532.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/a9215b9c01ba22e638a70f55db92d066/4980789377.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b98984dccee---gebexupifewig.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c7d182d047---31608226404.pdfIn PDF document text
    • https://sitycare.com/FCK-UserFiles/files/pewogizexivisugovogufa.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/e0af12777d998b1ccacc12c7ecbb8165/96134249154.pdfIn PDF document text
    • http://podhoru.cz/userfiles/file/66484013348.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/c0bb04d75dad3c601fa7e23cc62f912d/65285381919.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/2c5d5f1851abaca823d8fcd206617746/seterogebamanipo.pdfIn PDF document text
    • https://carcarnet.com/home/sandbox/domains/hkdance.tritek.hk/public_html/ckfinder/userfiles/files/34702872137.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fafc2e7a77---raxevovetezipasusix.pdfIn PDF document text
    • http://fondationmonetoile.org/clients/0/0e/0ecfe6182781ff486fe5156d2e85c11d/File/xemakuwagizul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=how+to+use+cystexPDF 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_off00011750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11750 18108 bytes
SHA-256: 2fe9fdbd28480a92220ca96d41c447f2366656f30dba02fcc371d382aab165c7
font_01_sfnt_off00014762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14762 10112 bytes
SHA-256: fa6487eb74ed7ff7eb7c91e243588b6fbc3b7cb309a64efeb2bf1ebaed137e65
font_02_sfnt_off00015e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E2D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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