Malicious PDF — malware analysis report

Static analysis result for SHA-256 4940a07eb220c6f7…

MALICIOUS

PDF

28.8 KB Authoring application: Poppler-utils First seen: 2020-09-24
MD5: 224f1fb6a9ebad951f2fe3368660e4ff SHA-1: fd50ddce4485413fed29fed1cb4aa221185e354c SHA-256: 4940a07eb220c6f771174373962089613575fbfb041e7cc967671ee3ac093ed9
192 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing. The embedded URLs are the primary indicators of compromise, likely serving as landing pages for malicious activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://brittney.design/uploads/1/3/0/6/130620987/towoxujutunun-rolarorowazajak.pdf In PDF document text
    • http://ccbucciero.com/uploads/1/3/0/4/130488311/891760.pdfIn PDF document text
    • http://ministerioslagloriaestuyajesus.org/uploads/1/3/0/5/130539735/3998827.pdfIn PDF document text
    • http://cleanforetagsstad.com/uploads/1/3/0/6/130621113/wagasi.pdfIn PDF document text
    • http://kingdomleaders.net/uploads/1/3/0/3/130313790/e2678db6.pdfIn PDF document text
    • http://noraleefashion.com/uploads/1/3/0/5/130543600/4210935.pdfIn PDF document text
    • http://marcusphotography.net/uploads/1/3/0/3/130379447/jujelataka.pdfIn PDF document text
    • http://renmach.com/uploads/1/3/0/5/130551267/3060367.pdfIn PDF document text
    • http://silvervigor.com/uploads/1/3/0/6/130621248/3efe4a4a7.pdfIn PDF document text
    • http://motorcityracing.shop/uploads/1/3/0/4/130476671/2564fc.pdfIn PDF document text
    • http://marmarworld.com/uploads/1/3/0/4/130435982/130435982.html#stryker+ankle+scopeIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C3A 7172 bytes
SHA-256: cfceab33d3a9b2e1f661a4c9dc516db6da043a1f7b1846b57cac8cbfdcfe4f90

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