Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b024db3453471d…

MALICIOUS

PDF

91.1 KB Created: 2021-09-21 07:05:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 3cf47086e1ec0dd9731e717a82b27812 SHA-1: e9f00e1155addaef663f6e029805a3c6ef0f5a21 SHA-256: f1b024db3453471d3be5d8a6fac55ea0007465b6870b455f2a508f3321ef91c9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links, many pointing to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users. The primary lure appears to be a fake download for 'pubg mobile india android download', directing users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

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://irlanc.ru/uplcv?utm_term=pubg+mobile+india+android+download PDF link annotation
    • http://kirakuramen.com/uploads/files/74448416361.pdfIn PDF document text
    • http://webinaris.net/ckfinder/userfiles/publics/files/pupofopukovaloxirufodafi.pdfIn PDF document text
    • http://zerosquareonline.com/file/77973603389.pdfIn PDF document text
    • http://studiotecnicopetrillo.eu/userfiles/files/83525135326.pdfIn PDF document text
    • http://wanyuantemple.tw/userfiles/file/fokapegamakid.pdfIn PDF document text
    • http://e-restauracion.com/app/webroot/files/uploads/files/73189973089.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d2f8503a48---tezulupebufiwunuf.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/files/43491903876.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/161304b8840b57---dekotamoj.pdfIn PDF document text
    • http://odnoklassniki-files.ru/images/uploads/files/62421016619.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/61881481120.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/16c5db16beac793c2c82cf6122077d73/femela.pdfIn PDF document text
    • http://chapelguild.com/images/usr/zakigezojonuvo.pdfIn PDF document text
    • https://bwhe.in/ckfinder/userfiles/files/29825801561.pdfIn PDF document text
    • http://teenmag.cz/userfiles/file/vesibemobotumedijawof.pdfIn PDF document text
    • http://aurora-c.jp/files/files/dumeramubunisitepuvojut.pdfIn PDF document text
    • http://aaas.handyfriendship.com/upload/files/sujorimabukew.pdfIn PDF document text
    • http://lecostationery.com/files/file/jovusagugibofubebaxeki.pdfIn PDF document text
    • http://alfavs.eu/userfiles/file/20896933025.pdfIn PDF document text
    • https://hatinhjobs.com/upload/files/sokefakejenugipo.pdfIn PDF document text
    • https://khoahoc.timviec365.com/picturesfiles/soxafurunatipun.pdfIn PDF document text
    • http://royal-pizza.eu/files/file/godusid.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16148f7a27e4ed---fozusefunareg.pdfIn PDF document text
    • http://jayeonrak.com/upfile_editor/2021/files/98994206778.pdfIn PDF document text
    • https://vrindaindia.com/php/joseph/uploads/file/gatupibixoxedimi.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/renelisuzon.pdfIn PDF document text
    • https://deitratech.com/userfiles/file/98557848701.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_off0000f3f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F4 21376 bytes
SHA-256: 2d9b7bde2fdcf3d00769ac4ebacdcbcf91ce6e2906b4ba7e43c663572ed7fb67
font_01_sfnt_off00012c09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C09 10652 bytes
SHA-256: 638dbd1e46a0025f2ca91f5238b371ef6ab91e3bb53a2dfc3c242a3c4b14cf16
font_02_sfnt_off00014427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14427 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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