Malicious PDF — malware analysis report

Static analysis result for SHA-256 a82fe89fb013b863…

MALICIOUS

PDF

78.6 KB Created: 2021-09-14 09:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 19ee310fdeeb77d529f4e0049d630be4 SHA-1: 5a28c069449425fb593138288909cb5acf508120 SHA-256: a82fe89fb013b863b0841eac52408ca307adf38a3a3963c5bc5a0a2221c38af6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to suspicious domains and are likely used to redirect users to malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests these URLs are part of a link farm designed for obfuscation and evasion.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://labonscafe.com/userfiles/6888152405.pdf In PDF document text
    • http://kovospm.cz/fotky/file/xinixazovifebuzevemuruxur.pdfIn PDF document text
    • http://bangiyaparishadtoronto.ca/bpt/editor/uploadfiles/4108103844.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135a44b047c8---98041587288.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136d5c9e7139---sexuzap.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/47277590306.pdfIn PDF document text
    • https://okazdedziecko.pl/_files/Media/file/63416512611.pdfIn PDF document text
    • http://rrarental.org/upload/file/rafeguxapo.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/15619320139.pdfIn PDF document text
    • http://onfireinteriors.com/userfiles/39635189356.pdfIn PDF document text
    • http://ultraljud.nu/bild/files/rixaforowogasokekiwefog.pdfIn PDF document text
    • http://dichvumucin.com/upload/ckupload/files/ziwusafiseg.pdfIn PDF document text
    • https://treasurehunterdetectors.com/ckfinder/userfiles/files/53807152400.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/boxumax.pdfIn PDF document text
    • https://1tlstar.com/storage/uploads/files/58175590595.pdfIn PDF document text
    • http://namlinhchisapa.com/userfiles/image/file/72354069669.pdfIn PDF document text
    • http://xn--80aafjbawrcdgsodbdciig4a5v.xn--p1ai/pict/file/xumovawaxibuvixizudet.pdfIn PDF document text
    • http://pbpharm.com/upload/files/dukebededowalabukika.pdfIn PDF document text
    • http://orthodoxnews.us/file/60091321927.pdfIn PDF document text
    • http://maxidmum.com/images/upload/fck/file/47088177246.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+change+photos+on+firestick+screensaverPDF 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_off0000cc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC05 18336 bytes
SHA-256: e63d2ec80983481727c9a86ffc282d4209f0c640e3e72d7dca63570eed78ca72
font_01_sfnt_off0000fb4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4D 10948 bytes
SHA-256: 4b2a79edd81727403a961f2043277c9d813a7101ec1857c9029f363dd577315a
font_02_sfnt_off000114b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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