Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dafc20d4b515384…

MALICIOUS

PDF

90.8 KB Created: 2021-07-01 13:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 59d8e6715f9a2a0ef2c54d12ae869812 SHA-1: 1fc87a49ce467e91d4ca8a0011293412847e0ba9 SHA-256: 2dafc20d4b5153845dcb8cf9cb7257acb86e817ca58788641766d953a6c9f8e4
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised WordPress upload directories. These links likely serve as lures to direct users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160886016cc8bd---lumunenilubuledawupilopos.pdf In PDF document text
    • http://tc-antey.ru/uploads/files/dojidudovaxosajem.pdfIn PDF document text
    • https://dodatnojamstvo.com/userfiles/file/gedixedupedibadawuwebip.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/2078294212.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d62b579fe8---gedokonajolubapobovuri.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/1152002cf2f62172a74eb4544ccba26a/nasofuruwobap.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/97c44e73b490b670560722a8dd86a4c5/ripikuwovos.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/49541066815.pdfIn PDF document text
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/24e4182048dfd038e38c252a8cb76ca1/89128924658.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/923e8db15c3b9089deb54aae7bc94129/70730225598.pdfIn PDF document text
    • http://tms-operation.com/upload/files/xujetevepativodabumam.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160966ed229a53---31155054836.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9897c2fcb5---sasidajogo.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/96726c04761862d006635850a12bc11d/zigoxewovepot.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/e6ofdvr5p12n50u5jt3bgvjf8d/1176986383.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/321d5a96a379e5a8cdcd3b0a4117d98c/24318748322.pdfIn PDF document text
    • http://elitaliaweb.it/upload/file/27847074962.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/43d5ee02ff53695aa935902bc64abcb2/nujitevosul.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/hki7rrf3rq8rakbbr4uq7tkitm/nedolaxerimuxi.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-4-30/20210430194644390720.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160a21a0b06402---56595859326.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075176ba3d1a---wotofagubebaxemakif.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cac02b48b3---51265118836.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=new+zeds+deadPDF 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_off00010104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10104 17636 bytes
SHA-256: c2c24fbcb85a6e22290bb9b6b5bc467a5992485b9cf77ba497f24d9963bfc167
font_01_sfnt_off00012f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F3F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14755 9804 bytes
SHA-256: 67a62f953a46c5481fc5e8105767079fbb009ff52437699abe0bcce53a68cc66

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