Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ad904980cf5605…

MALICIOUS

PDF

38.5 KB Authoring application: Karbon First seen: 2020-09-24
MD5: 307c0fd6c85161ba31279e1e8392c9b5 SHA-1: d53b39411ee8c4c4138548730c838fb627424036 SHA-256: e2ad904980cf56054923baac6648536fe6373c6842627a01e2b41d58a724a205
192 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or to redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate a phishing or malicious redirection campaign. No scripts were extracted from this sample, but the extensive link farm suggests the primary goal is to lure users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://calvarybconline.net/uploads/1/3/0/6/130621213/8390819.pdf In PDF document text
    • http://emoryinc.com/uploads/1/3/0/7/130775352/8157836.pdfIn PDF document text
    • http://dmicreativemanagement.com/uploads/1/3/0/3/130313489/e0a7fc.pdfIn PDF document text
    • http://shootingrobots.com/uploads/1/3/0/5/130543985/7757183.pdfIn PDF document text
    • http://plumtreefloraldesign.com/uploads/1/3/0/6/130621663/wufasetebafozom.pdfIn PDF document text
    • http://wazyshairsalon.com/uploads/1/3/0/5/130588388/fb13242049e45.pdfIn PDF document text
    • http://bienvenufosterryanobannonlawllc.com/uploads/1/3/0/6/130604502/5757260.pdfIn PDF document text
    • http://humansforlife.org/uploads/1/3/0/6/130621727/zudosomosakolo.pdfIn PDF document text
    • http://brooklyneventstudios.com/uploads/1/3/0/4/130435938/5978996.pdfIn PDF document text
    • http://newwaveproperties.net/uploads/1/3/0/4/130488469/bd221c95e62.pdfIn PDF document text
    • http://canberrabirthservices.com/uploads/1/3/0/8/130874309/130874309.html#essentials+of+english+grammar+and+composition+class+8+solutions+pdfIn PDF document text

Related samples 5

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_off000012c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C2 8604 bytes
SHA-256: 42e6915c352ddc9bb98b8cf8c15281aa55e634bc3a858e9d9c0789c06cd1a0c4

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