Malicious PDF — malware analysis report

Static analysis result for SHA-256 f208098a22730a46…

MALICIOUS

PDF

93.4 KB Created: 2021-09-11 22:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: d2d5663ce354bfbdbfcefcf2a49c38e3 SHA-1: 648be41fd2bf1d91188ae94c8f945a30e300d5c8 SHA-256: f208098a22730a46180f6da56d79c78577c2508c0080766712860f93b8656815
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised or disposable hosting, suggesting a link farm designed to redirect users. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to evade initial security scans. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://philabc.ru/uplcv?utm_term=pdf+viewer+in+android+studio PDF link annotation
    • http://salman-group.com/userfiles/file/41086934390.pdfIn PDF document text
    • http://aspbae.org/userfiles/file/22784598651.pdfIn PDF document text
    • https://uudanbury.life/files/file/koworodurodopukomovanuzi.pdfIn PDF document text
    • https://siemreaptraveltours.com/userfiles/file/namojakete.pdfIn PDF document text
    • http://marinda.ru/pics/images/file/69236668822.pdfIn PDF document text
    • http://bbdecontra.com/userfiles/files/20700535724.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/a774195a717471554343bf37f2a213c9/45476490636.pdfIn PDF document text
    • http://ammk.sk/userfiles/file/39770537599.pdfIn PDF document text
    • https://melnikhouse.com/userfiles/file/44453367749.pdfIn PDF document text
    • https://easypayindia.in/userfiles/file/tuzibevidegaxalikalekutoj.pdfIn PDF document text
    • http://abwingsbuffalo.com/uploads/files/52856747850.pdfIn PDF document text
    • https://beldapromosyon.com/calisma2/files/uploads/mojuxani.pdfIn PDF document text
    • http://dejede.com/userfiles/file/popenegoburok.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138d28779c22---94463475131.pdfIn PDF document text
    • http://pscworld.eu/ckfinder/userfiles/files/xufawama.pdfIn PDF document text
    • http://www.detskaoptika.cz/ckfinder/userfiles/files/bafefeded.pdfIn PDF document text
    • http://hzyixiangchem.com/upload/files/17916667249.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16137c6b975401---75941671801.pdfIn PDF document text
    • http://iscelenie.info/files/file/luxelitigamawezikaniraraj.pdfIn PDF document text
    • http://pomocnaukowa.net/Upload/file/4422870097.pdfIn PDF document text
    • http://e-junghan.com/userData/board/file/varifoganenorilegan.pdfIn PDF document text
    • http://xsjsbzrw.com/uploads/files/xemojuvujajajanaz.pdfIn PDF document text
    • http://cnmrobotics.com/files/files/8938492695.pdfIn PDF document text
    • http://dbcasagayathottam.org/assets/uploads/cms_images/files/92437760791.pdfIn PDF document text
    • https://nbcmedia.vn/ckfinder/userfiles/files/rilireni.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

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_off00010352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10352 10556 bytes
SHA-256: 8985dd2c65506e2f056a904b8fdfac29c34d7723599a1d9412067e225f491ce5
font_01_sfnt_off00011ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000133b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133B6 20428 bytes
SHA-256: 0356ff924f20046bed99a9dba76bee6dbab2f0c81515d2c953300a75c251badb

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