Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5ec18aa147f9ea…

MALICIOUS

PDF

93.6 KB Created: 2021-07-22 22:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: d17e4abf521795b71c5ed102e98e5e47 SHA-1: 96354914ae02ab678485aacbd1ed5bcdcafc63eb SHA-256: ae5ec18aa147f9ea716cc0667a41c824392a04e4f5e28a9a40e3875782854ba6
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm pointing to multiple domains, many of which are hosted on compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farm heuristics strongly suggests the PDF's purpose is to redirect users to malicious websites.

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 http://parkhigh65.com/clients/4970/File/87009233092.pdf In PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/c98da57aa8a1df330290d580b3dace67/53275722256.pdfIn PDF document text
    • http://brianhigbielaw.com/UserFiles/file/94683002273.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160ce083d643af---92487263762.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607641fa316f1---losurum.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/b475d70e6c6e523d175bb0ab2bbb8f6f/64496860778.pdfIn PDF document text
    • http://ibookingkr.com/FileData/ckfinder/files/20210719_2D690A935F9F5B9D.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/dmss6vr2v7vdb8ol2r9l8tpvk5/semipimulozibudogiba.pdfIn PDF document text
    • http://mrmax.ca/clients/9797/File/89821684887.pdfIn PDF document text
    • https://kristinanamaste.eu/files/36726816499.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9b0388028---55960408421.pdfIn PDF document text
    • http://verdantnorwich.com/clients/3/30/306756bb587dffcd11ca74610d845a16/File/35773442948.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/cm0odo84p0rie6qkvcu2pqfsdt/pisupaweta.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7b1419fd2---32160689823.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/5a1f995a7b11e3be2b2abaa351631ba5/86016919733.pdfIn PDF document text
    • http://www.logomarcanet.com/userfiles/file/81462914357.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/pl6kjphf08e3aq2gi9eb3a4912/80480313089.pdfIn PDF document text
    • http://biancoacolori.it/userfiles/files/47254401278.pdfIn PDF document text
    • http://camonetinternational.com/files/file/69680635634.pdfIn PDF document text
    • http://fxmeat.com/upload/file/9b501eff433585cc4d556ef8c0db85bb.pdfIn PDF document text
    • https://ivanamihic.com//files/verosedinasibizepuba.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/2f3b67a36dd63521b33236fee6feff2d/11682931633.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=phineas+and+ferb+in+milo+murphy%27s+lawPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10964 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001217b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1217B 11140 bytes
SHA-256: aa2e0e311a4f526f204e21cc64c27be84e9b0b9fbafa7a6f1c7e2b184c6b044f
font_02_sfnt_off00013b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B1F 17352 bytes
SHA-256: 57a88f3dd535292c7f28d1471d62bbd7fcfe4e9595ebd8d7d2a2e1783456a371

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