Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab3a7012ee45d8aa…

MALICIOUS

PDF

76.0 KB Created: 2021-09-17 12:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: e34fd189ba4096bb59a758f4cbc2394b SHA-1: 12a19636fda69da8b107d502cf659c5ac84bd87e SHA-256: ab3a7012ee45d8aaf5c8571de2d8712eabbedfa3d5ea236013d063ec37fade07
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. Heuristics identified it as a link farm, with numerous external URLs pointing to potentially malicious content. The PDF structure and embedded links suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://gardatrans.com/content/Files/fajuvibegebozaxapo.pdf In PDF document text
    • http://www.lalorraineperdue.com/documents/99216613052.pdfIn PDF document text
    • https://www.serwkom.pl/plugins/ckfinder/userfiles/files/70275461321.pdfIn PDF document text
    • http://www.taxivanclass.com/uploads/ckfinder/files/74293486565.pdfIn PDF document text
    • https://mokshadhamnepal.org/userfiles/files/mepatibugimusaxezewu.pdfIn PDF document text
    • http://corporatiegids.nl/uploads/files/nesatakupalujanu.pdfIn PDF document text
    • http://gazdalkodjokosan.hu/img/userfiles/file/47274482571.pdfIn PDF document text
    • http://qdjshg.com/files/file/42242637798.pdfIn PDF document text
    • http://sm.ac.th/ckfinder/userfiles/files/88037123197.pdfIn PDF document text
    • https://szalkasszorutacskok.hu/app/webroot/files/content/files/xukedodo.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/161310d94f00b3---50517914273.pdfIn PDF document text
    • http://giasuminhtam.com/Images_upload/files/renover.pdfIn PDF document text
    • http://basar-hemeringen.de/ablage/userfiles/files/wijeneboxafefav.pdfIn PDF document text
    • https://comptables-publics.fr/userfiles/file/tuvujemoro.pdfIn PDF document text
    • https://soudurelauziere.com/upload/editor/file/9681619183.pdfIn PDF document text
    • http://hyunsin.net/userfiles/file/zitilibipodasag.pdfIn PDF document text
    • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/51914325830.pdfIn PDF document text
    • http://techniq.ae/admin/uploadfiles/file/1581326707.pdfIn PDF document text
    • http://parzenica-bialka.pl/userfiles/files/zalamu.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/15204767977.pdfIn PDF document text
    • https://efnnma.org/files/file/zakodedowovuwifusata.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=sonic+3+air+iosPDF 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_off0000c0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F0 19736 bytes
SHA-256: a5150cebfb57a2f5885549d046d549783d6a26e51ee5d77ed53e8954d68e6f58
font_01_sfnt_off0000f3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C10 10192 bytes
SHA-256: 2d49c6dc9b0b796ca42c83417ade634c3e291e6fda52c09de68811ca73aa9979

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