Malicious PDF — malware analysis report

Static analysis result for SHA-256 a49f826a2e99e213…

MALICIOUS

PDF

77.9 KB Created: 2021-09-12 03:30:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-24
MD5: fd0378f6b21f7f13e3e09a187ece8a86 SHA-1: 7153e66397b7980cbc4175af0832872db91ddab5 SHA-256: a49f826a2e99e21383bb1e49ab077f4a31024e601563b8f300b66bf4d1aae2d3
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b48b57f85f---bibaduw.pdf In PDF document text
    • https://mamap.in/ci/userfiles/files/rilajo.pdfIn PDF document text
    • https://berettyotv.hu/userfiles/files/rixewupinetakexizil.pdfIn PDF document text
    • https://ooo-kenk.ru/userfiles/file/sewokipuliboxuvuto.pdfIn PDF document text
    • http://bimbrlata.cz/UserFiles/File/8562966930.pdfIn PDF document text
    • http://uteambio.com/upload/files/16751608603.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/bhf4647lrmimlla9jpuo9i61m3/49536120119.pdfIn PDF document text
    • http://lasantitosrestaurant.com/userfiles/file/58300095915.pdfIn PDF document text
    • http://punaide.com/userfiles/files/kemogivunitusuz.pdfIn PDF document text
    • https://areopag.ru/sites/default/files/uploads/43920641713.pdfIn PDF document text
    • https://jpjplumbingandheating.com/FCKeditor/file/tevefofunobifubigowizix.pdfIn PDF document text
    • http://nessium.net/userfiles/file/25593947479.pdfIn PDF document text
    • http://www.39koratmachinery.com/file_upload/files/44211706619.pdfIn PDF document text
    • http://concilianavarra.com/userfiles/files/10016388636.pdfIn PDF document text
    • https://tuinvandecruys.be/file/doras.pdfIn PDF document text
    • https://12shio4.com/contents/files/daduzorokibidega.pdfIn PDF document text
    • http://hoangnamjsc.com/upload/files/81789028189.pdfIn PDF document text
    • https://eminentland.com/admin/userfiles/files/64891927260.pdfIn PDF document text
    • https://hopclickhospitality.com/scgtest/team-explore/uploads/files/vilujonitozavobojuz.pdfIn PDF document text
    • http://mebizstekla.ru/userfiles/file/tususapuvuzafitinirob.pdfIn PDF document text
    • https://gloriamus.org/Uploads/userfiles/files/wetadiruvas.pdfIn PDF document text
    • https://egyptsuntours.com/userfiles/files/83238978331.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=breaking+bad+gomoviesPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC821 10800 bytes
SHA-256: b30bd2755b3e133c484944877050063e4cd1efb5bcd2fb6136bda542d8500788
font_01_sfnt_off0000e0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D0 18556 bytes
SHA-256: 77c2ff043ac9a1223276d858542dc1abab52d5cc61cc5b9d3ad44ade09f23bb3
font_02_sfnt_off00011144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11144 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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