Malicious PDF — malware analysis report

Static analysis result for SHA-256 be15d97482bb2c86…

MALICIOUS

PDF

86.7 KB Created: 2021-07-27 15:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 9a119d43f9de4163ac3b1db26c0193b0 SHA-1: 6c118ee0f57c3f4598416efab04ac7e0720c41ba SHA-256: be15d97482bb2c86b2bec0e7b8b366f9d5383897489c3627bc8aab4835508630
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to numerous domains, many of which are hosted on compromised CMS uploads, suggesting an attempt to distribute malicious content or phish users. The document body is heavily obfuscated and unreadable, providing no further context on its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606dca621e7a4---24675058277.pdf In PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc73d04fcb8---gudemesojajoxuzu.pdfIn PDF document text
    • http://a-kamen.com/userfiles/file/gogabixawovigitefeb.pdfIn PDF document text
    • http://sungsam.net/userData/board/file/joxujepalebupabikap.pdfIn PDF document text
    • http://jonkmp.nl/img/cms/file/ragivivit.pdfIn PDF document text
    • http://eatatrudy.com/uploads/files/2386259521.pdfIn PDF document text
    • http://iccjsc.com/images/uploads/files/38250708023.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/a701fbe1ee199e62d0080f8ce394e11c/kajemeto.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/kqshok7kq0jv55hagvhujhbps7/vijadosunapivufuxezozukuk.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160c5b7ddaece3---xebaxo.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/aa0170b3e9c8063243fdaffff551ea87/13060030720.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/svhupmjkjn6t2tppljlhamgbpb/relatukokojetegaxewut.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160782b6e88244---60760365756.pdfIn PDF document text
    • http://cy2hand.com/userfiles/zuwesijojekiweran.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/5g482b72t1p8tdeas4serbbrj3/26091533013.pdfIn PDF document text
    • http://sochi-riba.ru/ckfinder/userfiles/files/43507006518.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c729944126---tuzofekiwelotu.pdfIn PDF document text
    • http://phuocthuan.vn/images/pic/file/15593516761.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e912615b5e1---baxizef.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/26d4273ea92eedb4e8841e775224be43/93939293421.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609fdab206db7---60021261262.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160873a4f19878---85445643564.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=ejercicios+prefijos+y+sufijos+ingles+pdfPDF 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_off0000e844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE844 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001005b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005B 10864 bytes
SHA-256: 9fb903beeb4858812f8bd8475315284012552d7735030d7b56436ff3ac83db39
font_02_sfnt_off00011948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11948 19484 bytes
SHA-256: 1beba618e68f75417a78d130646e11b0e12d0747fbcf19ea2d7bf348f055aa7d

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