Malicious PDF — malware analysis report

Static analysis result for SHA-256 886dc6a6c0914a28…

MALICIOUS

PDF

108.0 KB Created: 2021-07-24 03:04:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 81785631f28ea8372629dddd414e9f9b SHA-1: 30598911c7d238eac13f265e2264f243c75d01ee SHA-256: 886dc6a6c0914a28841ee15a36502a4bd99cdb9486a01a0f139a49042aa7f50f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple PDF files hosted on compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were directly extracted, the structure and embedded URLs are indicative of a phishing lure designed to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/d9766182d20d1e46b159e10d0131d1e2/lukafojesojavoxazu.pdf In PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160862b41019ab---64231480565.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ncmi4g7104b9hckj7vo8nr7i00/43951348930.pdfIn PDF document text
    • https://olivierdaulte.com/ckfinder/userfiles/files/sebajufepewesajubewepome.pdfIn PDF document text
    • http://wo-kop.pl/userfiles/file/88426114954.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/84a4cba676cee35b47299a212ada3c0f/44400574116.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/bcd069d3b60b1e80f685b1d5b3e0eba1/maniwilabibepesu.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/91687414284.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c689a2a45cb---1553557522.pdfIn PDF document text
    • https://bustotoronto.com/userfiles/file/tebogefusapotefe.pdfIn PDF document text
    • http://sl1971.com/clients/5/51/517263f0417f9379c67e6eba0e0bdfe8/File/63621806626.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a34c9b6cc1b---21746507184.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/jujesubirunubisasepone.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/paferegaladuxasalavalo.pdfIn PDF document text
    • https://store-connector.com/_upload_bilder/_filemanager/file/zilubuwabojekovusavorovop.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/b3021e3f2f6dcadc35a013fd799f2162/sidejim.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b059abde21b---98233893586.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e618a90b0e7---figovutokejodedovib.pdfIn PDF document text
    • http://odessahighschool1970.com/clients/7/70/70263b1be1b93b62200e198143f59f20/File/38201075705.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16078b9d663cb7---37044071798.pdfIn PDF document text
    • http://www.dereformasenalicante.com/archivos/files/78185403162.pdfIn PDF document text
    • http://szalkasszorutacskok.hu/app/webroot/files/content/files/dawodigapepi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=chamberlain+liftmaster+professional+formula+1+program+keypadPDF 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_off0001403f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1403F 17172 bytes
SHA-256: 77724fa01fd4a8d0d46d749bb71ca8dfee4a443ec7683764357f01afb5d60816
font_01_sfnt_off00016cf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CF5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001850c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1850C 11472 bytes
SHA-256: 106dc660b3dbf60df8a230907882ca1f531ca46b367bc0953dc9cef152096859

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