Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e7a855b991336f8…

MALICIOUS

PDF

58.4 KB Created: 2021-01-12 11:09:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b8b64185376163afdd1b70762ee5a98f SHA-1: 8b1e46e080ff5806b8c2f026006f68fb2958e8f3 SHA-256: 0e7a855b991336f8628f0589e10dfde5db33e5eef070be688071d3ddcc5e9033
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains multiple external URIs, many of which point to disposable hosting and are used in a link farm pattern. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous external links suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9367

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://traffset.ru/aws?utm_term=brother+dcp-+t710w+datasheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5fb5bd1f83e63.pdfIn PDF document text
    • https://site-1178112.mozfiles.com/files/1178112/sumobarijagigunanefo.pdfIn PDF document text
    • https://site-1171784.mozfiles.com/files/1171784/infinity_gauntlet_stones_images.pdfIn PDF document text
    • https://site-1172308.mozfiles.com/files/1172308/vewoxobada.pdfIn PDF document text
    • https://duxegolukazokun.weebly.com/uploads/1/3/1/3/131398215/pupamaxedudamadure.pdfIn PDF document text
    • https://xanodupujariris.weebly.com/uploads/1/3/0/9/130969381/fefunuj_sidaxiliroli_nixajolawom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378641/normal_5f8b3cc7a230d.pdfIn PDF document text
    • https://site-1168264.mozfiles.com/files/1168264/cardo_packtalk_bold_owners_manual.pdfIn PDF document text
    • https://lovarewido.weebly.com/uploads/1/3/4/3/134322716/zetewuzoded.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/dusobodukidigo.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/acidosis_lactica_congenita.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6C 3120 bytes
SHA-256: 16a0685b1af8f7ff3286410c82d065b2ef9dd16f5cc5e004aadb0dd239daad33

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