Malicious PDF — malware analysis report

Static analysis result for SHA-256 293ab01626de413e…

MALICIOUS

PDF

85.1 KB Created: 2021-08-12 10:55:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: c07aa5a13eacf1cc0cf345bcd7e6f001 SHA-1: 25eca4715142cc2cc9e747cf413f106fafb7e490 SHA-256: 293ab01626de413e02a203a93f9da96f14918d86f3bc09a9d2b9afc7c857b18c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links pointing to compromised CMS upload storage and disposable hosting, suggesting an attempt to redirect users to malicious sites. The presence of these links indicates a likely phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 http://faceconnects.com/ci/userfiles/files/34835900554.pdf In PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2874678b5---83249500125.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/3121ce828c42ced815fd4c1fe49e8944/kemuxeselojesarolotawuwug.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160922aa8b292c---gaxaze.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b9e890046---dajadujunazagadowale.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/27763421372.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/wuzaviperofuzefabi.pdfIn PDF document text
    • http://cuhs1981.com/clients/8/82/82ca37c076ec4232796cb58ed009bb3a/File/murabexukelilefuwewus.pdfIn PDF document text
    • http://nusratali.com/userfiles/files/92943131452.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/50729903657.pdfIn PDF document text
    • https://ilcaminodaugo.it/file/fovipeladukewidoreja.pdfIn PDF document text
    • http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/6317078596.pdfIn PDF document text
    • https://artasedanasingaraja.com/uploadfck/file/3670611346.pdfIn PDF document text
    • http://aa-nusd.jp/38275485998.pdfIn PDF document text
    • http://nordicaluminium.ru/userfiles/file/74279123429.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/mm47kh7el7emjq0tbugqj8goj0/86821517883.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/fidotuwimizosel.pdfIn PDF document text
    • https://isabellepieman.com/userfiles/file/1613598800.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/guxudorikixobewujiv.pdfIn PDF document text
    • http://bulk-supplies.com/userfiles/file/buxazigajesu.pdfIn PDF document text
    • http://xn--80aamdqpfpr.xn--p1ai/upload_picture/fawurijivapidimupudadu.pdfIn PDF document text
    • http://zpkprzemysl.pl/ckfinder/userfiles/files/5474609014.pdfIn PDF document text
    • http://wjvanderheidedienstverlening.nl/uploads/file/foguwasotebebibuxolipage.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=how+much+does+ibd+swingtrader+costPDF 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_off0000e8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B2 11088 bytes
SHA-256: 007582d7a592c2b1f3730ff597eb803e0d8bfd49f13729742dbee119ff80964b
font_01_sfnt_off0001022e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022E 17252 bytes
SHA-256: c7723871f49c015fe9b2b4b3e596cdd61d19bcac37c80073339e9dffed9feff7
font_02_sfnt_off00012ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1