Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc4e2b3cd2b64a37…

MALICIOUS

PDF

35.6 KB Authoring application: Karbon First seen: 2020-09-24
MD5: 4486cd07b119301ecb24167891be9f92 SHA-1: da40ee2c225cb9caada93d861500f60d096b059c SHA-256: bc4e2b3cd2b64a371f6f7927a74e558b0303a18f2d3637fab03e27c139615ff0
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to distribute content or manipulate search engine results. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent, likely related to phishing or traffic redirection. No scripts were extracted from this sample.

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://www.naflutes.net/uploads/1/3/0/3/130323765/e57a9d.pdf In PDF document text
    • http://smith-re.com/uploads/1/3/0/6/130620755/xikapesolegile-diruzizides-boxoxirunivad.pdfIn PDF document text
    • http://r-ain.com/uploads/1/3/0/7/130738732/4d884f315eb09.pdfIn PDF document text
    • http://testimonials.chrisbikes.co.uk/uploads/1/3/0/5/130540525/ziziba.pdfIn PDF document text
    • http://sisterkeeper.org/uploads/1/3/0/7/130775665/mezowuvoxemilo.pdfIn PDF document text
    • http://teaby.me/uploads/1/3/0/7/130739012/69f4c39f30ca49.pdfIn PDF document text
    • http://moviemedic.net/uploads/1/3/0/6/130603905/fddf808.pdfIn PDF document text
    • http://mta-sts.mail.newbeginningswalworth.com/uploads/1/3/0/4/130488401/valepagub.pdfIn PDF document text
    • http://solizagency.com/uploads/1/3/0/6/130621757/341752.pdfIn PDF document text
    • http://www.dlcimeris.ca/uploads/1/3/0/7/130776684/dubavudagelibam.pdfIn PDF document text
    • http://thetapbox.com/uploads/1/3/0/6/130620474/4485583.pdfIn PDF document text
    • http://www.watercolornaturejournals.com/uploads/1/3/0/7/130776639/benevewirijazurusofa.pdfIn PDF document text
    • http://www.biomedicalregulatoryresearchservices.com/uploads/1/3/0/7/130739287/00bb95.pdfIn PDF document text
    • http://taosabi.com/uploads/1/3/0/5/130542813/730241.pdfIn PDF document text
    • http://speerinteractive.com/uploads/1/3/0/5/130539097/e883ff58.pdfIn PDF document text
    • http://wenji.bpmtc.com/uploads/1/3/0/6/130620936/130620936.html#stomach+hiatus+hernia+cureIn PDF document text

Related samples 3

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_off00003247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3247 7324 bytes
SHA-256: 01aa85f4eea9f66d527c694802468653212d2045bb94ae473b95e5b77c438999

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