Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2d5e1fb004ae96…

MALICIOUS

PDF

84.5 KB Created: 2021-09-12 02:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 22b073e1d191266b73399d95f032f9fb SHA-1: d8dcf559ff7b4a2f8ae60d49a84dde0b8a440717 SHA-256: 9e2d5e1fb004ae9625a568bdf25dfbf04494a6e9ec3fdb5bd2bca25714657c28
224 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple external links, some pointing to compromised WordPress sites and disposable hosting, indicating a phishing or credential harvesting attempt. The critical heuristic 'SE_SECRET_RECOVERY_LURE' strongly suggests the document's purpose is to trick users into revealing sensitive recovery phrases or private keys. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 8

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://junona.manyel.website/images/uploads/medium/12185501930.pdf
    • https://villanakarin.com/userfiles/files/lepiruzuvajepetogosusax.pdf
    • http://trendstyleimage.com/uploads/ckfinder/userfiles/files/43226418501.pdf
    • https://xulynuocphangiathinh.vn/images/pic/file/85104691588.pdf
    • http://www.polni.si/Images/files/zuzunizupu.pdf
    • https://laatjehuisweerstralen.nl/upload/file/tuzefimovowonedesiwuzale.pdf
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/4807ab6983c1356cf124593ac8d97b12/17521189960.pdf
    • https://anakaygame.net/calisma2/files/uploads/kenuxatikuvidijajefoze.pdf
    • http://faradbox.pl/files/file/ronizilal.pdf
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613cfef776066---gobugofegujog.pdf
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee01f45016---nirupiwepupevojofagaki.pdf
    • http://arsvet.ru/img/upload/jezixuxulavanixivizabar.pdf
    • https://biroestarsa.hu/uploads/file/97102129704.pdf
    • https://dunakanyarfesto.hu/ckfinder/userfiles/files/xuwudowukiketul.pdf
    • http://factory-01.com/js/upload/files/79197469971.pdf
    • http://lnaixi.com/userfiles/file/20210903140101_1850974164.pdf
    • http://home-hj.com/up_photo/file/74982805939.pdf
    • https://moulindelarroque.com/userfiles/file/wetesubiverusuwegujugiw.pdf
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/eed97e2a6994599508e1dc8b416a7a40/6760989893.pdf
    • https://xinpayflow.com/ckfinder/userfiles/files/lopulapijoduxag.pdf
    • http://whatcanidoforyou.eu/publish/file/zoxujuroz.pdf
    • https://medpressa.ru/files/file/divuveg.pdf
    • http://backupcenters.com/userfiles/file/majepepen.pdf
    • http://tbeaindia.com/userfiles/file/podanasi.pdf
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/161398eaac4257---95379306265.pdf
    • http://ttmplus.com/userfiles/files/wigidumewujadag.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=adobe+photoshop+cc+2014+crack+download
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4af.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AF 16792 bytes
font_01_sfnt_off0000fcc6.bin
c314f7d473261b1a84f1e47a81379f8d99c780d86f0f6cf2ed36952bb6d1e5f7
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC6 11192 bytes
font_02_sfnt_off000116e8.bin
80cb2dc44604d0c91b3d89f18d3ee6e8651a3fbac56dfe02f50c701fae7ea4f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x116E8 17368 bytes