Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eae96fd0566962e…

MALICIOUS

PDF

82.8 KB Created: 2021-09-18 07:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 7416a4e5f329861e20ac53ac46717d88 SHA-1: b49ed1f37121858e6b8c021a039f863bc737fcc9 SHA-256: 1eae96fd0566962ea60d93151d3d745bccac8bba0f7b0fe1db6608a628e62ae6
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute further malicious content or phish users. The PDF structure and embedded URLs are consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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://coretry.ru/uplcv?utm_term=where+is+android+wallpaper+stored PDF link annotation
    • https://benhgout.net/uploads/Files/file/84958423137.pdfIn PDF document text
    • http://dochoiotovn.com/uploads/userfiles/file/wusesawudo.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/5dfee28d2efe9adfc46fddb7963d6e54/54580218989.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/33994279608.pdfIn PDF document text
    • https://dijitalsanat.link/upload/files/24240395065.pdfIn PDF document text
    • http://www.eau-msu.ru/ckfinder/userfiles/files/88581325292.pdfIn PDF document text
    • http://thaoduocquyhiem.com/userfiles/image/file/13510832583.pdfIn PDF document text
    • http://solarwindependence.com/ckfinder/userfiles/files/togalogixixusuxajab.pdfIn PDF document text
    • https://airbays.com/userfiles/file/vununaluzizajur.pdfIn PDF document text
    • https://www.edmcenter.xyz/ckfinder/userfiles/files/rizujabakag.pdfIn PDF document text
    • http://18554080.com/userfiles/file/dimubepovikujexaxuzibef.pdfIn PDF document text
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/78949738997.pdfIn PDF document text
    • http://chaukitchen.com/uploads/files/52840724611.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/b0985ba07a02c97ec63c04608008b794/59485782066.pdfIn PDF document text
    • http://sydjpg.com/images/upload/file/20210910_151448_178.pdfIn PDF document text
    • http://titadoorbinhduong.com/upload/files/jubovit.pdfIn PDF document text
    • http://tzsunup.com/upload/44810893399.pdfIn PDF document text
    • https://euforbiabulgaria.gbinvest.net/uploads/pages/files/48094362731.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/7n0732p942m43oursoqj9n7db6/18946994150.pdfIn PDF document text
    • https://twinslock.com/ckfinder/userfiles/files/juzaw.pdfIn PDF document text
    • https://albawadiroad.com/userfiles/files/23931298807.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/murowul.pdfIn PDF document text
    • http://manvilastrust-org.bvirani.com/ckfinder/userfiles/files/65066065645.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/h68c6gqm4hr8lvs8m1976k661i/55006839039.pdfIn PDF document text
    • http://congtrinhnhaviet.vn/upload/files/67165863848.pdfIn PDF document text
    • http://dtyxbpzx.com/filespath/files/20210906051045.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16139dbc679124---zotodosulari.pdfIn PDF document text
    • 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_off0000df02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF02 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF714 17376 bytes
SHA-256: 7be49cfae376c9def5cf64dc840538d3ba20c9dd475fdece181a52951c6fb28f
font_02_sfnt_off000124c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124C5 10568 bytes
SHA-256: c8f913197b3b8b01c8b5d0b5387dc86a732c9ca572a2aeaf93e902a9688b7cec

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